I'm pretty sure Todoroki is making a joke about Deku X Kacchan since he sees Kacchan acting as dad with a kid who looks like Deku and a kid who looks like Kacchan. Correct me if I'm wrong
WAHHHHHDidn't I tell you to stop bullying Dekuko?AGGHHHH! THAT HURTS!I'LL KILL YOU!I thought Midoriya and Uraraka got married or did he get married to you?Todoroki and Yaoyorozu's family is here to visit.