k_hello_k's manga / #Like the art(142)

Seme and uke constantly compete to see who's better. Uke feels insecure due to past relationships saying he should stop showing off his accomplishments. Seme doesn't care about this and finds it motivating. Ukes insecurity eventually causes a drift between them.

Seme has split personality disorder (DID) due to trauma. His other personality is in love with uke, but original personality denies his feelings for uke due to his trauma resurfacing. He comes to terms with his feelings and both personalities decide to be with uke.