Chuya and Hiro's relationship was perfect. Chuya often went to performances and museums with Hiro.But everything changed for Chuya when Hiro introduced him to his twin brother. Hiro warned that his brother is very different. But Chuuya didn't think that much. Hiro is so well-mannered, intelligent, and Dazai is his opposite. Chuya immediately realized which of the two of them was the evil twin.

Chuya immediately began to get annoyed by Dazai's manner of speech. His constant compliments, flirting, dumb tackles, all of this irritated Chuya. But when Chuuya was not in the resource and because of this, he even refused to meet Hiro. He couldn't help but succumb to the temptation of curiosity when Dazai was literally sitting under his windows.

To Chuuya's surprise, the meeting went quite smoothly. Dazai asked easy everyday questions, to which Chuya answered colorfully. After the meeting, Chuya couldn't help but feel strange. He refused to meet Hiro, but at the same time spent time with his brother.

after a while, Chuuya received a bouquet of flowers and chocolate-covered strawberries. He invited Hiro to his place, but when Hiro saw the bouquet, he immediately said that he had not sent it. Chuuya immediately realized that Hiro had sent the chocolate-covered strawberries, and Dazai had sent the bouquet. Chuuya immediately got rid of the bouquet, because he is in a relationship.

It was no surprise to Chuuya that Hiro was angry, but he was frankly annoyed that Hiro was taking out his anger on him. Chuuya was practically burning with anger at work, especially when Hiro started grumbling that Chuuya shouldn't swear.

Chuuya really thought about his reason for his relationship with Hiro, and he realized that he was holding onto Hiro only because of his reliability. He decided to end his relationship with Hiro as soon as possible. After the breakup, Chuuya wrote to dazai, to which he immediately offered to come.

"You arrived pretty quickly" Chuuya calmly said when he noticed Dazai with two aluminum cans Cola.