Sen Kaibara/Relationships

Neito Monoma
Having a fairly mature attitude, Sen seems to be annoyed with Neito’s disdainful attitude towards Class 1-A, as during the Cavalry Battle of the U.A. Sports Festival Arc, he told exasperatedly told Neito to not antagonize Katsuki Bakugo and to simply move along. Like quite a few of his classmates, he does not seem to have a positive opinion of Neito.

Tetsutetsu Tetsutetsu
Sen appears to be straightforward and honest towards Tetsutetsu. Sen often has to remind him the flaws of plans, as seen during Round 3 of the Joint Training Battle. Despite this, Sen gets along with his fellow classmate pretty well.