His narrow, hazel colored eyes with cat-like pupils that make him appear sly and intimidating, meeting with [Eye Color] eyes that make him look like an insane or crazy person. Tetsurō can't believe that [Male Name] is the one behind all the huge crimes, the crimes that excite Tetsuro since it's challenging for him to solve. He was suspicious in [Male Name] before when they met the second time but that change when he helped him one of the crime scenes that happened on the train, and since then, they both became closer, a lover to be exact.

"Thank you, Tetsurō, You can now save your friends,"

Hazel's eyes widened when he sees his lover takes out a gun and point it in his head, all he could see is his lover, literally. Everything else falls away, he can't even hear the rustle of the leaves and the waves of the ocean below them.

"W-what are you doing?"

*BANG*

"NOOO!!!!!!!!!!"

It's like everything become slow as he sees his lover body touch the ground, he rushes and hold [Male Name]'s body closes to him, just how did it happened to this? He didn't want this to end like this. He told himself that he will make sure to bring down the lord of crimes in his own hand but what he didn't expect is that his lover is the said lord of crimes. He thought that after he solves this they can finally live peacefully.

**5 years ago**

Tetsurō was answering some questions of the ladies from upperclass, Testurō was on the famous ship called Noah's ship.

"Then that person, can you guess what his work is?" One of the ladies ask as she pointed her painted nails to a man with [Hair color] hair and a matching [Eye Color] eyes, that is now looking towards them. A noble.

"Don't tell me guys you don't know? It's obvious"

"Come on tell us" The three ladies whine to the male who just laugh push back his bed hair, as he look to the [Hair color] male who gaze to him, waiting for his answer also.

"His work is.. a mathematician" He finally answers, making the ladies ask again how he can tell.

The [Eye color] eyes male just look at them until a lady apologize to him, "I'm sorry we were just making a bet"

"A bet?"

"Yes, he said he could tell someone's occupation with just a look and he just would not miss" the lady explained to the male who look towards the bed haired male.

"A spiral stairway is really amazing, no wonder someone would be fascinated by it" titling his head to look at [Male name] with a smirk. "Am I right? Mr. mathematician"

"Why do you think I am a mathematician?"

"With a look I can tell that you're a noble, now if you were the eldest you would have a specific occupation but, no matter how you look at it, you're not" Tetsurō said, he was now a few feet away. "If you were, you'd be in the social hall with the other nobles"

"But how does that make him a matematician?" The lady from before ask Tetsurō making him put out three fingers.

"That's because he was looking at that spiral stairway. 'Time', 'Distance' and 'angle' do you get it now?" But at how the lady look at him makes him explain more.

"The work allowed to the young nobility are limited, and of course anybody would be impressed with the stair ornaments, However, he stopped at the beginning of those stairs normally, one would start climbing to admire the whole thing, from only that I can minimize the occupations he could have, An architect? A student in physics? No that wasn't it he wasn't looking at the pillar either because he wasn't interested in how the weight was distributed" He explain as he walks in front of the stairs and face them.

"Then why did he stop there? Is it because he wanted to see? To comfirm-" the lady was cut off by Tetsurō.

"By the Golden Ratio, if the curve drawn by that stairway was according to it, got it now? I'm done"

[Eye color] stare for awhile before he starts to talk. "I surrender. That was a good explanation, I am indeed teaching mathematics at the university however, more than the golden ratio, I like the fibonacci sequence"

The girls praise Tetsurō for being amazing and being right again. "Well then, I shall also try this" [Male Name] said putting his thumb and pointer finger on his chin looking closely to Tetsurō.

"Let's see... you... look like you play the violin" With this Tetsurō's have his full attention.

"But that doesn't mean you're a musician, you also do hand-to-hand combat and seems to very good at physical abilities... pardon me" the [Hair color] male close the distance between them making Tetsurō flinch and blush at the closeness.

"Additionally, you like to do science experiment but hate your own drug dependance I suppose, Obviously a graduate from *** and talking as if you know everything, you must be proud of your background particularly in your mother's side, am I wrong?" [Male Name] finishes.

"How'd you know?" Tetsurō asks, he's starting to be interested in this guy.

"It's obvious" the male chuckles and leave the hazel's eyes male.

—————

"AHHH MURDERER!!!"

Someone shouted as they sees in the stage a duke stabbing a commoner.

"Restrain him!" One of the Three officer said but the duke was about to run away however, he was kick by the jaw making the duke let go of the knife and the duke was restrained.

"Thank you" one of the officer said to Tetsurō but he only said that he's interested in the dead body not in the duke. Tetsurō observe the body he hold the chin observing the inside of the mouth, the wrist and lastly the fingers. He chuckle after he examine the body "That's Interesting" what Tetsurō didn't know an [Eye color] eyes watching him from a far a frown is visible on his face.

————-

"Yo, Mathematician" someone called making the said male to stop and look behind him and ask who he is.

"I was looking for you, there was no one who would understand me so" Tetsurō said.

"It must be the one that happened in the stage"

"Yes! I'm talking about the murder case, that's not a normal case" the raven haired explain.

"Was there... something unnatural with this?" [Male Name] ask observing Tetsurō.

"That body was dead since last night" with this the [Eye color] eyes narrow without getting notice by the man in front.

"The rigor mortis of the extremities and the jaw are still progressing, I'd say the time of death was around 10:50pm, no matter how you look at it, he wasn't killed under that stage and judging by the conduct and words of the duke there's no doubt that he is the culprit and was aware of his crime and the people also saw him stab the body with a knife"

"But that's the body from the night before! Don't you think it's strange? It would mean that the duke himself didn't know he was already dead, in other words, he was made to think that the body was still alive which means there's a third party pulling the strings, It's like the ship itself was the stage"

————-

Tetsurō still remembers their first time meeting each other in the Noah's ship. "I love you" he whisper to his lover before dumping the body to the river.

————-

"Look at this, this look like Kuroo, they also have a same name!!" Bokuto shout while pointing at the picture of Tetsurō showing it the bed haired male with Akaashi and Kenma.

"Bokuto-san please lower your voice" Akaashi scold his captain but look at the big picture that was display on the museum.

"They really look alike" Kenma commented who finally look up to his console, as he observe the picture. The bed haired, the eyes and the smirk that always Kuroo's wear is also the same the only difference is that the clothes, since the one on the picture is on 80's the clothes are different.

"Well maybe I'm the famous detective in my life before" Kuroo jokes but in reality the familiarity he felt on the picture and the picture next to it makes him feels like he is missing something.

"[Male Name] look it looks like you" Kuroo heard someone teases, he, Kenma, Bokuto and Akaashi look towards their right to find three guys the two teasing that looks exactly on the picture next to 'Testsuro's' picture.

"Shut up, already" the male said to his friends and his eyes clashes to the hazel's eyes.

"You" Kuroo and [Male name] said at the same time while pointing at each other.

"You know him?" Bokuto asks his friend who shake his head, "no, but it feels like I really know him,"

"[Male Name]!" Someone called the [Hair color] making him and his friend leave the four males.

"HE ALSO HAVE THE SAME NAME BESIDE TETSURO!" Bokuto pointed out.

♣️♠️♥️♦️🃏♣️♠️♥️♦️🃏♣️♠️♥️♦️🃏♣️♠️♥️♦️🃏

I just have to write this before I forget about it! Well I hope you like it! Btw I'm really sorry again! But this story is base on sherlock holmes and moriarty.