We walked about 15 m before stopping in front of my sister's classroom, I tried to open the door but it was locked, that's a good signal, monsters wouldn't know or go through the trouble of locking it anyway, so there are probably humans inside it.

*Knock* *Knock*

No response, probably afraid, thinking that I'm a monster, although even if they knew I was human, they have all right to be afraid of.

"Hey, I'm human and came looking for my sister, is anybody there?" - When that was said, I heard a sound of a chair sound colliding with something that I supposed to be a table.

"Who is it?" - I heard a girl's voice, I could notice fear from it.

"Kosuke Kubo, I'm third year, my sister is from this classroom, and I'm looking for her right now, her name is Nishi Kubo."

"O, onii-chan?" - I heard a voice that resembles my sis', thanks goodness, I really thought she had died, I could say that she was pretty much lucky.

The door opened from inside, and I could see 7 people, 4 girls and 3 boys, including my sister, they were all worn out the, highest level player here was 3, the majority was still level 1, so they haven't killed a monster yet, I wonder how they managed to stay alive like this, it's almost midnight, the apocalypse started on the morning, I should use this room that monsters are not attacking right now to get some rest, then get level 18 tomorrow, I want to be able to 'use' my new armours, a better sword would be pretty good too.

"Wow, you are already level 15, h, how is that possible?" - Said the level 4 player with curly hair.

"Well, somethings happened and I ended up killing a lot of monsters."

"Kosuke is super strong, I'm only level 8 because he helped me." - Kaiya

"Kosuke, I was so worried, what is going on, I am so scared." - Nishi came to me crying and hugging me.

"We, well, I don't know either, it's not even a day that all this started, but it seems we'll have to get stronger to survive from now on, leveling up and getting stronger skills are the only way to beat the monsters and stay alive."

"Tha, that's not possible, they are too strong, few of our classmates died trying to kill them, it was only a matter of luck that we managed to survive and locked ourselves here, and with the gold Hisao managed to gather from the monsters' drop, were able to eat till now." - Said a pretty girl in glasses, she must be referring to the curly hair

"Well, it is your option to stay here, but you won't survive for long, since your gold will soon finish, the only way to continuous eating is to kill monster for the gold as well, buying provisions in the system's shop to stay alive."

"You... You have already killed many monsters right? Already level 15, so must have lots of gold, please, how much do you have? If you share with us, we co, could survive too." - A plain looking girl raised her voice.

"I indeed have money, but why should I give it to you? If I did it now, I'd still have to continuous killing monsters, and feeding you, if you want to eat, you've to be stronger, I already have my ass to take care of, sorry." - Are all people like that? So egoist, the other group was like that too.

"You, how could you?" - The girl in glasses seems to be mad, I could see the people around me looking with disproving faces, me as if I'm not human.

"Couldn't you level us up as well? The same way you are helping this girl, it's unfair to only help her don't you think so?" - Hisao

"Not really, I can decide whoever I want to help, but in this case, she'll be helping me as well, since she is part of my battle strength, anyway, I can't carry so much dead weight, it would drag me down with you guys."

"Pl, please Kosuke, they are my friends, can't you help them?" - Nishi.

'Oh, dammit sister, can't you have any better friends?'

"Ok, I'll help you guys level up a bit." - They still didn't look happy about it, but I ignored it and gave them all but the curly hair, that had a short sword, a small knife about 20 cm in length that was 200 gold on the shop, that cost me a total of 1000 gold pieces for them, dammit leaches.

I didn't give anything to my sister yet, saying that she won't need it for now, and told her not to waste any status points when she level up for now, since we should decide her job carefully, to synchronize with ours.

"Ok, I'll only help you guys once, what level are the closer monster?"

"Level 7, the ratmen to the right side, but they are too many and too high level for us, it would be better to go to the dog's place, they're level 3, about 30 m after turning right on that corridor."

"Okay, let's go there, follow me."

As we got closer and closer to our objective, the group of bastards started to panic a little, especially the girls, everybody started hiding behind me when we saw the enemies, there were 3 dogs outside the room, they were just small fries since level 3 was the same level as the goblins that I first killed when the world changed, so this wouldn't be a challenge at all.

I smoothly ran after the dog monsters, and cut off their limbs, spoiling all the floor with their blood, they started screaming, but I'm starting to care less and less about the monsters' pain.

"They are incapable of fighting now, the people that haven't leveled up yet, come and kill one each." - There were only 4 people that haven't killed any monsters yet, so just one left to go, I'll be helping them killing the small fries, but I'll make sure to do the last hit on the boss, since it will grant me extra status points.

These dogs' room was really spacious, since it could accommodate about 50 dogs heres, although they were pretty squeezed, seems like the group of retards really got luck this time, they would be leveling up a lot. There are monsters with level 3 to 5 here, and a boss level 9, weird, there are a few monsters level 4 with the same name as the level 3, shouldn't they be the same level? No use in thinking about that right now, this is going to be easy anyway.

I started to remove their limbs pretty fast, the entire process just took about 10 minutes, when I beheaded their boss, a message popped out from nowhere.

The Elite's Boss spawn point has been killed,

the extra reward will be given to you when the

the monster generated from this place is killed.

If they are not all dead within 30 minutes, a new

Elite monster will re-spawn.

'Better to tell them to hurry.' - "Hey you guys, come here and kill the monsters, you will distribute their heads however you want, hurry up, since my time is precious."

They were liking me less and less, too bad, nothing that can be done about this, I made sure that my sister killed 1 monster just to get her to level 2, since she wouldn't be able to form a party if she hasn't at least got the player rights to use the system.

When they finished the killing, I didn't level up nor I got any money worth mentioning it, but I was able to get 6 status points, and allocated them all on wisdom, raising it to 31, but what I need the most is to level up 3 levels and be able to unlock my new items' attributes, they are all from the same set, so it is possible that if I wear them all, I'll get some bonuses, since it's a rare set of equipment, not anything to laugh about.

This remembers, Kaiya needs to level up as soon as she can as well, since I gave her my equipment, the highest level item that she has is 12, still 4 levels to go uh.

The newbies destroyed all the monsters, they were looking pretty happy now, some of them got some shabby looking equipment too, but it was none of my concern.

"All right, the job is done, so I'll be leaving now, let's go, sis and Kaiya." - I said when I confirmed everything was all right, but things never goes as planned.

"Hey, are you really going to leave us, don't you feel any right to protect humans begins, the same race as yours?" - Nishi was looking at me with complicated eyes, the glasses girl was saying shit once again, I think that grouping up is really a good thing, if I just say it based on what information I have about the monsters right now, but human's nature is something that I am not ready to put up with, unless I am able to trust the person, large groups will make this impossible, a help or cooperative situation may be all right, but I don't want to be put in spots that my life depends on them.

"Yeah, this is it, let's go, I hope you can make out of here alive, if you could downstairs to the cafeteria, you will find another group near some slimes that are pretty weak, you can group up and level up together, I really wish you all good luck and my best regards." - I parted with my sister and Kaiya, going to the closest stairs, I didn't want to bump with the cafeteria's group, so I took the risk going thought the other path that could possible have other monsters, since it wouldn't be really bad, as we could level up more.

As I got ready to go downstairs, direct to the first floor, I was stopped by my sister with watery eyes looking on me, serious, Nishi know me way too well, whenever she feels like asking me something, she'll look at me like this to melt my heart, too bad for her, I was already expecting this, and a little trick is not going to work.

"I know what you want, but let me say it, would you trust those people with your life? I could notice that they were just wanting my help because I was strong, if not they wouldn't even spare me a glance. These kind of egoistic people, that think that way, and say that I have to help them, for sure wouldn't do the same if we were in different spots, with them having the power, and I in need of it." - I went and said it before she could yell anything, I really don't like to make my little sister sad, when I look at her, I always think that she is the purest girl in this whole world.

"I, I see, but brother, is it really all right? They may ending up dying because we didn't help them."

"Well, not our problem. Problems, problems, problems, we already have ours hands full of them, what we need now is solutions, you too are still too low level, sis, I'll explain about this 'system' while we go down, accept the party invitation for now, this way you'll be able to level you up faster. Kaiya, Nishi, before anything, we need to discuss what we are going to do, right now, I need a place to sleep, I'm really tired, it's already hours that I've been fighting monsters, let's look for a safe place on the fourth floor, and lock the door, then we'll discuss on what we should do from now on."

They nodded at me, agreeing with what I just said, I sent the party's request for sis, and she rapidly accepted it.

"There is a janitor's room on the third floor that is pretty small, it's possible to accommodate us 3 fairly well, and it's impossible to have a monster spawn there, because of its small size, and we won't have problems within blocking the door, because there are heavy shelves there that will just make our job easy. How about going there?" - Kaiya

"Oh, nice idea, I really didn't remembered this room, thanks Kaiya, let's head over there and discuss things that are needed." - we proceeded smoothly till there, we literally just had to go downstairs and saw the room, I really can't remember this place, although I'm here for three years already.

We easily came inside, and just as Kaiya said, the room wouldn't have problems accommodating all three of them quite nicely. The door was locked by the 2 shelves on the room, there was even 2 beds already positioned here, pretty close one to the other, the janitors most likely decided to sleep here sometimes, to save time on night duties I think.

"All right, so let's go to the point, what we need the most right now is levels, I thought that we could take our time and level up slowly, but the battle with the dogs showed me how wrong I was." - I made a somewhat dark face while I said that, the girls started me to show a little bit of fear.

"Wh, what did you discover there, brother?" - Both started to look at me with curious expressions, I didn't want to tense them up so I tried to stop the ceremony.

"All the monsters with the same name, at least on their respective spawn points that I saw, should be on the same level, but some there were different, they were a level higher and the most. I can be wrong, but if I am correct, the monsters here level up just for being alive, and this is really bad news, since soon, there won't be anymore low level monsters to kill, if we don't level up fast enough, we'll be out leveled by them, and the only possibly outcome for us is death." - I really made a serious expression, although I couldn't confirm my hypotheses right now, but I still think that I'm correct, and I can't waste time, or our life would be forfeit from us.

"Bro, brother, you are really scaring, you may be wrong you know, it was probably nothing."

"Well, even if you may come to be wrong, I think we still need to level up as soon as we can, for now, the monsters stays on their respawn points, not venturing very far, but how can we guarantee that it will be always like that? When I was looking through the shop I saw a really interesting item, try taking a look at the item "Safety Room" in 'utility'

Safety Room - 15k

temporally creates a space capable of accommodating

5 people, it can only be used up to 9 hours a day, and

will be recharged every day at the time when it's first used.

Only the owner's party can enter the room,

it cannot be damage while it's in function by any kind of

attacks, and will stay in the form of a necklace while

not being used.

"Wooooooooooow, Kaiya, you just hit the jackpot, dammit girl, just now telling me such good news" - I couldn't control myself, I would finally be able to sleep without any worries, very soon, this dream would come true, I was worried about this all the time, oh my god, I just couldn't be any happier than that. She immediately blushed, she was really apple-red when I let go of her. Seeing this, my sister really started to smile, she noticed that I could interact fairly well with Kaiya, I realized pretty fast why she was smiling like that, an action that would have never done with anyone before, was easily completed this time, with a girl that I just met, well, it must be because she is just too cute, sexy, and pretty.

"We, well, with this, we conclude some of ours problems, about our next course of action, I want to go to my old classroom, look for a classmate, she may still be alive, since it's close to the school's main exit, it shouldn't be a problem, do you guys have anything that you want?" - Noticing my mistake, I tried to change the topic fast.

"I think we should talk about how we'll interact with people from now on, since as you said, they can be even dangerous than monsters, but I really don't want to see them as such." - Nishi.

"Okay, that's valid, to me, we should maintain distance, and don't interact as much as we can, but if we see people in trouble, we'll try at least help them if they we deem them not filled with malicious intentions, and the help can be done with little time or effort, is that good for you, sis, Kaiya?"

"That's fine, we'll try in cooperating with them when it will benefit both parties as well " - My sister is really stubborn uh, quite different from her amazing and handsome brother.

"That's fine by me, although I prefer to just stay with Kosuke, but anybody that he trust, I'll as well, I can feel that he is really trustworthy, even though I met him today" - Kaiya said that while blushing once again, my sis, sharp as she is, didn't let this slip.

"Oooooh, not even a day, and my little brother is already flirting so much, love is so beautiful isn't it?"

"Wh, what are you talking about sis, shut up, now, let's just go to sleep, I want to get the hell out of this place as soon as I can."

There were 2 beds, it was decided that I would sleep with Kaiya, since sis had bad sleep, or so she should, although I've never heard of it, but after, I started to regret, I really couldn't sleep well with such a pretty girl right beside me, worst, she was hugging, trembling a little bit, poor girl, that must be hard on her. And like that, I spent my first day on the new world.

We didn't know that yet, but the decision that was made today, we would regret making it forever.