|Manga Debut||Chapter 1|
Tamao is a chubby student with curly black hair, arced eyebrows, and wears glasses. He wears a red jacket with black trims, over a buttom down white shirt, a black tie with two yellow line, black pants, and black shoes.
Tamao is shown to be perverted, like his friend Kousuke. Despite the perversion however, he has shown to care about Rintaro as he became friend with Rintaro and even saved him when Rintaro was going to be ambushed. He is also a masochist.
First Encounter with Rintaro
Tamao joined the class in a swimming pool. After the class however, Tamao became a suspect by both Keiko and Makoto for stealing Ayane's underwear, which he stated that he didn't do so. Both he and Kosuke seek Rintaro and inform him that they are innocent, while requested Rintaro to clear their name by find the real culprit who stole the underwear. While seemly relief that their sworn brother is eager to help them, Tamao was speechless about Rintaro's "detective skills" and claimed that he is a fan to some fictional detective manga and novels. After Rintaro began to investigate, Tamao and Kosuke attempts to flee before they are warped by the girls which they claimed that their suspicions remains.