Kusame Otomiya

 (乙宮草芽; Otomiya Kusame) is a supporting character in The Gentlemen's Alliance Cross. He is Haine's step-brother and Itsuki's step-son.

Kusame is the heir to the Otomiya family. He secretly fell in love with Haine at first sight and refuses to call her onee-chan for that reason.

Trivia
Kusame is a silver honor student and Vice President of Imperial Academy Middle School's Student Council. He became vice president by earning points, not with money. He works in the Middle School Student Council with Komaki and is forced to become her boyfriend because of a public confession. However in a special not seen in the regular chapters of the manga, Kusame realizes that he likes Komaki and they become a real couple. After accepting Komaki's feelings for him, Kusame ends up competing with Tachibana for Haine's affection as their older sister.