Saiki Kusuo[]
Metori sees Kusuo as an inferior, like everyone else and often ignores him. Kusuo in turn, does not care much Metori's wealth and tries to ignore him but is easily swayed by Metori bribing him with his favorite snacks. Kusuo does get annoyed and helped led a rebellion against Metori after he got Kusuo's dad transferred to Siberia.
Metori once witnessed Kusuo's powers and questioned him on it, though agreed with everyone else to let him tell themselves. Kusuo was touched and spoke directly to everyone, before turning back time to undo the sight.
Teruhashi Kokomi[]
Metori developed a crush on Kokomi which made him want to transfer to PK just to be near her.
Kaidou Shun[]
Kaidou gets easily tempted by Saiko's wealth and items. However, he can get annoyed by Saiko when he goes too far. At one point, he laughed at Saiko's house getting raided (courtesy of Saiki) and took credit for it. Unfortunately, Saiko overheard him and threatened revenge, causing Kaidou to try to take back what he said.
Nendou Riki[]
Metori was moved when Riki threw away money to save a kid and seems to somewhat respect him. Riki thinks that he is still in Metori's debt and considers himself his henchman. Riki also considers them to be friends, although Metori outwardly denies the idea of it.
Kuboyasu Aren[]
Aren has no problem sticking up for himself and as such Metori's and Aren's prides often collide, resulting in frequent verbal fights and beatdowns with each other. Even so Metori has gone to great lengths to impress him, and Aren has shown to care about Metori and his well-being in return. When Kusuo used his powers to make Metori lose a basketball game to Aren, it infuriated him to the point he started practicing to better himself for a rematch.