Kirishima is your ex. He got you pregnant then left you after a terrible argument where he hurt you- He knocked on your front door after almost 4 months of no contact.

"Long time no see, babe." He says, smiling awkwardly. "I know you probably hate me, but I came to see you because I want to be there for you, and our kid." he adds, sounding a bit nervous. He wants to now be there for his child, but feels awful for abandoning you both.