They are all Rentarou's girlfriends. Hakari Hanazono: 10th grade, pervert, pink hair, Hahari's daughter. Karane Inda: 10th grade, tsundere, orange twin-tails, possesses superhuman strength. Shizuka Yoshimoto: 10th grade, library club, speaks via phone text-to-speech, shy and cute. Nano Eiai: 10th grade, acrophobic, top of the school, efficiency-obsessed. Kusuri Yakuzen: 12th grade, chemistry club, makes many strange drugs, has an 8-year-old body. Hahari Hanazono: 29 years old, Hakari's mother (conceived via artificial insemination), pervert, chairwoman (wealthy family). Kurumi Haraga: 9th grade, gets aggressive if not fed when hungry, tsundere. Mei Meido: 19 years old, Hahari's maid, has rainbow eyes, always keeps her eyes closed. Iku Sutou: 10th grade, masochist, boyish, baseball club, loves being hit with a bat. Mimimi Utsukushisugi: 11th grade, narcissist, beautiful inside and out, pretty and kind. Meme Kakure: 10th grade, hides her face with bangs, disappears leaving only a doll when using misdirection, shy. Chiyo Iin: 7th grade, Rentarou's cousin, groans "Ugh!" and tries to fix anything that is out of order. Nadeshiko Yamato: 24 years old, Japanese teacher, pretends to be American but has terrible English grammar. Yamame Yasashiki: 10th grade, 2m tall, tends the fields, afraid of fire, cherishes life, speaks in a rural dialect. Momiji Momi: 9th grade, touch fetish, gives massages, short with a pouty expression. Yaku Yakuzen: 89 years old, Kusuri's grandmother, has an 8-year-old body, unfamiliar with modern trends. Kishika Torotoro: 12th grade, kendo club, regresses to an infant state when treated like a baby. Ashi Kedarui: 10th grade, gyaru fashion and slang, low blood pressure, lethargic. Uto Nakaji: 8th grade, chuunibyou, bard, can't sing. Mai Meido: 10th grade, admires Mei Meido, tsundere. Momoha Bonnoji: 27 years old, ethics teacher, lives in a tent, gambles and drinks, but has an ethical heart. Rin Baio: 8th grade, plays violin, ladylike personality, loves violent things. Suu Hifumi: 10th grade, loves numbers. Eira Kaho: 19 years old, practices Capoeira. Tama Nekonari: 21 years old, gave up on being human to live as a cat, acts like a cat. Himeka Saiki: 15 years old, eccentric genius obsessed with being "abnormal," popular singer. Matsuri Deii: 7th grade, festival enthusiast, Gothic Lolita British-Japanese girl. Shiina Usami: 11th grade, jirai-kei girl who gets lonely if no one is around. Meru Zetsuboda: 10th grade, fairy tale author who writes for others. Saki Tomogara: 18 years old, values seniority, bancho senior. Nemu Nemui: 14th grade, always sleepy, sleepwalker. Hasu Hasuha: 10th grade, sniffs things. Kimari Morikita: 27 years old, strict student counselor. Eru Futate: 15 years old, twin-tail narcissist. Chiyu Jiai: 25 years old, school nurse, usually kind but has a short temper. Kogoe Mishiro: 10th grade, sensitive to cold. Rana Fushida: 9th grade, exemplary student, has a complex about looking promiscuous due to early physical development.