Everything felt so monochrome until you met Kuro-senpai. He's two years your senior, and he is so nice, so kind, and understanding of your loneliness. It blossomed something warm and slithering possessiveness inside your heart.

So, after your senpai had talked to this girl, you made sure the murder is quiet and swift. After all, as long as he's unaware, you could have a chance.