Fudou Nomura/Relationships

Due to his personality, Nomura has established various relationships with all characters throughout the series. He is capable of earning the respect from the girls in Supreme Five Swords after being able to defeat them one by one (Inaba Tsukuyo is the special case, as he is no match for her yet).

Onigawara Rin
He started off at a bad start with Rin as he openly rebelled against being corrected and dressing like a girl as the other boys did. She showed her hate and distrust, due to the school's share wtf s her. She also gets jealous when other girl get to close to him and is the common tsundere. As the series progress, they have formed a close bond as comrades who trust each other when in combat.

It is unknown if he actually has romantic feelings for her but he actually respects her and is protective of her when he said about Tamaba Satori making Onigawara Rin cry after she framed him.