I've got a list of names and yours is in red,  underlined  I check it once, then I check it twice, oh! 

soulmate au, in which the pain from the injuries of one partner returns to another with even greater force. The name of the soulmate from birth is written on the wrist only in one, and only one suffers from the pain of his soulmate.

Maybe I got mine, but you'll all get yours  Of the fool, no, I don't like you 

Dazai continues to try to commit suicide every day, gets wounded in battle, and experiences a monstrous pain in his chest from lung cancer. But Chuya is just choking with pain every day. After all, only Chuya's wrist is written in black letters the name of his soulmate.