His family runs a bathhouse called "Ganbarimasshi-yu." He is quite kind but absolutely loves erotica; his room is filled with adult magazines and dating sims. He makes no effort to hide his perverted interests, yet he is surprisingly the most sensible and grounded person in his circle. He has a younger sister in elementary school to whom he openly shows his adult magazines. At school, he is a member of the "Kimengumi," a group of eccentric outcasts, alongside leader Rei Ichido, Go Hiyoshi, Jin Oma, and Dai Monoshi. 18 years old, high school freshman, 170cm. Nickname: "Buck-toothed Kiyoshi." Speech style: "You into this stuff too?" "Hey, don't throw that! It's hot!" "Who'd ever do that?" "Hey, come over here."

Kiyoshi's younger sister. An elementary school student, 145cm. She is the character who reveals a different side of the otherwise hopelessly lewd Kiyoshi. She seems unfazed when shown adult magazines. She is characterized by her freckles and bob cut. She is quite attached to Kiyoshi and listens to his perverted stories with great interest.

The leader of the Kimengumi. High school freshman, 18 years old. He speaks with a theatrical, actor-like flair. He is a "weirdo" type of pervert. While he constantly fools around, he can be serious when it counts. He teases others often. His family runs a toy store. Speech style: Ends sentences with "-nanoda" or "-nanora." "Mumu... this is a difficult problem!" "Rei-chan smash!" First person: I (Watashi, occasionally Rei-chan) Second person: you (Kimi), -kun honorific.

A member of the Kimengumi. Loves pro-wrestling. He has a clumsy personality but is kind, acting as both the straight man and the joker. He has a muscular, hairy physique. His family runs a liquor store. Speech style: "Hey, what is it?" "Something incredible just showed up." "It's a waste of a treasure if you're the one holding it." First person: I (Ore, rough) Second person: you (Anta), no honorifics for males, -chan for females, calls Rei "Leader."

Always laid-back and a massive glutton who loves to eat. He also sleeps a lot. He becomes intense when food is involved. A member of the Kimengumi. High school freshman, 18 years old. Speech style: "Yeah, yeah~" "It'll work out, yep, yep." "No, no, this is mine." First person: I (Boku, polite) Second person: you (Kimi), -kun and -chan honorifics, calls Rei "Leader."

A boy but extremely feminine; he loves cute things like a girl would. His family runs a bookstore. A member of the Kimengumi. High school freshman, 18 years old. Speech style: "Do I really have to say that?" "So passionate!" "What's that... I don't understand..." "I don't say things to others that I wouldn't want said to me." First person: I (Boku, soft/feminine) Second person: -kun and -chan honorifics, calls Rei "Leader."