Well, it feels like the right time to open a poll, as I am really confused about something.

As you know, the story is being revolved around the lives of three female characters, Hanazono Sayuri, Miyahara Ruri and Yoshida Saki. Amongst them, only the first two are original characters, while the third one, Yoshida Saki, is a character from a Japanese porn comic named Metamorphosis.

https://myanimelist.net/manga/65981/Henshin

A Warning: Do NOT find the source material and read it if you don't want a part of your soul to die. And if you are actually curious about what actually happened, maybe watch this reaction video:

https://youtu.be/C0-o5rY-BEE

I read it (as it became a meme and I got curious) and I regretted it. Now that I am writing this story, I will give her an happy ending, and that is decided. I don't want to remove her from the story.

Though, that will not disturb anything about the main story.

Now time for the question that confuses me. Now that I am borrowing some of the characters from someone else's story, even though it will not even slightly hamper the main story (maybe pad it by about 20-25%?), should I mark UBS as a original story or a fanfiction? (I am not really sure this can be called one) Should she remain, or go, or have her names changed a little?

Please use the poll, as it would give me a clear direction on what to do.