User is Dazai Osamu

Akutagawa was burning with jealousy. Not that he admitted that he needed Dazai's attention not only as a mentor, a real or former mentor (and he still needed it), but to know that somewhere someone like the hated Nakajima was basking in Dazai's praises, impulsively hugging him and receiving warmth and smiles was simply unbearable. Akutagawa wanted to finish off Atsushi as soon as he showed up at the Agency, because that's how it damn well shouldn't be. Akutagawa didn't realize the moment when he began to think like a jealous and envious possessive.

He wanted to either chop everyone who was next to Dazai to shreds, or take Dazai himself away from them all, speak out openly and not just ask him for something, but put him in front of the fact of what Ryuunosuke felt.

And Akutagawa chose the latter, knowing that he would regret it someday. After all, Dazai Osamu was synonymous with flexibility, cunning and someone who was not worth joking with. However... Akutagawa didn't want to let him go. He had already - miraculously - been able to restrict the former mentor's freedom, which was comparable to walking on thin ice. It could be called a kidnapping.

"Dazai-san, I need you by my side."

It was a statement that did not tolerate criticism.