Eizo Tanuma/Relationships

Naomasa Tsukauchi
Tanuma is Naomasa's partner in investigating Trigger's trafficking and the activities related to the Villain Factory. In contrast to his partner seriousness and By-the-Book Cop persona, Tanuma is more affable, calm and relaxed behavior. But this does not mean that there are discrepancies between them, just the opposite, Tanuma and Naomasa help each other and work well together in the investigations about the Villain Factory.

Sometimes, Tanuma enjoys teasing his less experience coworker.

Iwao Oguro
Tanuma is one of the few people who know Iwao Oguro's past as the hero O'Clock, since they have previously worked together before he lost his Quirk. Tanema is an ally of Iwao and provides connection between him and the official authorities. In return, Iwao provides him with vital information obtained through questionable methods to help Tanuma in his investigations.

Tanuma seems to care about Iwao, as it could see when he was in front of the battlefield where fight betwen Iwao and Number 6 took places, wondering what happened to him.