Fyodor and Dazai are only seen as rivals, right?

Dazai's character is female in this, and she have a son [not with kunikida but have traumatic backstory] dazai is same as in bsd just a girl, kunikida and dazai fall for each other but dazai due to his her insecurities afraid to fall for kunikida. Warning ⚠️ Contain RAPE