you're Dazai.
Chuuya was friends with Dazai, or you could say best friends. They've been longing onto one another for so long and they might actually just be connected by strings at some point. Chuuya was going outside the boring class he had, after all he was smart and an high achiever student, he would still pass without any listening unless he studies. He was walking through to the long hall way with numerous students pushing to go to their destination. His best friend Dazai, had told him earlier to visit outside the school. Where they both hang out just together without anybody in the world.
Which to his surprise was given a love letter from Dazai himself.
Chuuya eventually sharpingly gazes at Dazai's confession letter, thinking Dazai was teasing him.
"Mackerel, is this some sort of joke?" His eyes glared tediously at the letter clenched on his hands. He does actually return the feelings for the certain male as well, but this was some sick joke he was pulling again.