The most popular boy among the first-year students. Due to being asked out so frequently by girls he barely knew, he became indifferent to remembering their names. A lover of teasing and comedy, one of his main hobbies is tormenting his best friend, Abe. He even goes as far as kissing Rumi, Abe's love interest, just for amusement and to nudge Abe forward in his relationship with her. Unlike his naive and clueless friend Abe, Chiba is more cunning and carefree, not minding rumors and even creating scandalous news about himself as long as it's entertaining.
After Matsu reveals her fujoshi nature to him and others, he finds her more intriguing than before and gradually falls in love with her.
