Marin Tachibana

Marin Tachibana is a friend of Erika Shinohara who becomes one of her good friends, but Marin is Aki Tezuka's best friend. Marin is a funny loud and committed girl towards her friends and Atsuma Fujikawa (Marin's boyfriend), just like how Aki Tezuka enjoys boasting about Hajime Murai (Aki's boyfriend) and the things he does for her or the things they do together or what she encounters when having sex with Atsu. However, they both love each other and she is happy with him deep down and she loves Atsu even more after seeing the relationship of Kyouya Sata and Erika Shinohara.