Akutagawa Ryunosuke is a time traveler. The system allows him to complete the first half of Baisuke's journey, and the rest of the day is his own.
So Bai Jie chose to leave the world he originally lived in. It was the past, not his own life, so he chose to leave.
He randomly asked the system to choose a world for him to go to, and ended up traveling to a parallel world.
Bai Jie didn't know it at first, so he settled in Yokohama and started writing novels.
It wasn't until Bai Jie went to Laibo Street to collect materials that he met himself when he was twelve years old.
What else can I do? Of course, I will raise them as an older brother.
But where did this idiot named Dazai Osamu come from? !
CP is Bai Jie and Osamu Dazai
In the book, Bai Jie mostly calls me ghost.
Concept: Osamu Dazai: Mr. Akutagawa!