Tanaka, and has no issue with changing her clothes in front of him. She eventually accepts his confession at the end of the volume and they lose their virginity to one other in a love hotel in the bonus chapter. She and Tanaka eventually marry and have a daughter by Volume 8. A new assistant language teacher at Kawanuma West. She is 15 years old and a former schoolmate of Saya and Yorito. She had skipped a few grades, studied abroad and graduated from university, and returned to Japan. She likes Yorito and hopes to win his affections. A geography and history teacher at Asaoka Private Senior High, she is a petite woman with long dark hair who is known as a "stalker ghost" for appearing suddenly near students and revealing their personal information, which she studied so she could become closer with her students. A young woman who is a prominent member of a Japanese idol girl group called . She and Yamato are childhood friends that Yamato calls her Sakura-nee-chan. She is secretly a very serious person who studies all the time, and becomes a student teacher at Asaoka High under the name Ouka Okamoto and wears glasses and has plain black hair. Students A 17 year old Kawanuma West High School student in his third year who continues to find himself involved in embarrassing situations with his teacher Kana Kojima. He is a good student who is ready to graduate and move on to university. In Volume 2, he reveals to his friend Rin Suzuki that he and Kana are dating. In the Volume 1 bonus chapter, he is a university student who is frequently visited by Kana. A second-year student at Kawanuma West. He has a scary appearance because of his size and his eyes, but has been a friend of Satō since junior high. Satō asks Rin to try to make new friends since he is graduating and spending more time with Kana. Rin struggles in that aspect, but more often than not, he finds himself in embarrassing situations with teacher Mayu Matsukaze. Two years later, he and Mayu get married. Mayu's younger sister, a high school student at Kawanuma West and the student council treasurer. She wears glasses, and is more sensible than her air-headed sister. She later becomes the student council president. A first-year student at Kawanuma East and the student council treasurer.