Ryuuichi Kurosaki (黒崎 龍一 Kurosaki Ryūichi) is a delinquent guy whom Yoshiko Hanabatake interacts with and he becomes her disciple, calling her anego (アネゴ, "big sister").Ch. 4, 6 He tries to become friends with Akuru Akutsu but fails because of his shyness, and ends up acting more like his underling.Ch. 29 While he may seem stupid, Ryuuichi has proven himself to be very smart as he once stayed home and studied even placing higher than Akuru who was shocked that Ryuuichi was skilled in academics.
Ryuuichi has dyed blond hair and he is generally seen in his school uniform.
Ryuuichi tries his best to become friends with Akuru.
Ryuuichi is a close friend of Yoshiko that he even goes as far as calling her "Sis".
Ryuuichi doesn't have a good relationship with Yoshie.
At first, Ryuuichi said that Sayaka was cute and he seems to have romantic interest in her. However after becoming friends with Yoshiko, he seems to have lost that romantic interest for unknown reasons.
- The name Ryuuichi means "noble, prosperous" (隆) or "dragon" (竜, 龍) (ryuu) and "one" (一) (ichi).
- Ryuuichi's surname Kurosaki means "black" (黒) (kuro) and "cape, peninsula" (崎) (saki).
- Ryuuichi's blood type is B.
- Hiroyuki (the manga author) based Ryuuichi off of Ichigo Kurosaki from Bleach.
- Ryuuichi attends the same school as Yoshiko Hanabatake, Akuru Akutsu, Sayaka Sumino and Fuuki Iinchou.