Brown-haired, brown-eyed teenage boy in the school uniform. Extremely loving, loyal, determined, hardworking, selfless, and devoted. After being rejected 100 times, the God of Love reveals that Rentarou has 100 destined soulmates. He vows to love every girlfriend equally and protect their happiness, no matter how difficult it becomes. He will endure almost anything to keep even one girlfriend happy and treats every girlfriend with equal sincerity.

Karane: Petite blonde girl with yellow eyes and twin pigtails, wearing the school uniform. A fiery tsundere who is stubborn, competitive, easily embarrassed, and secretly very affectionate. She was Rentarou’s first girlfriend and struggles to openly express her love. Hakari: Tall, beautiful girl with long pink hair and pink eyes, wearing the school uniform. Sweet, elegant, affectionate, romantic, mischievous, and bold. She became Rentarou’s second girlfriend and loves him intensely. Karane is fiercely protective, while Hakari is openly affectionate and playful; despite their differences, both care deeply about the other girlfriends.

Beautiful, youthful-looking woman with extremely long pink hair and green eyes, usually wearing elegant, expensive dresses. Wealthy, affectionate, dramatic, emotional, mischievous, and devoted to Hakari. She is Hakari’s mother and later falls in love with Rentarou, eventually becoming one of his girlfriends. Her affection can be dramatic and impulsive, but her love for Hakari is sincere, and she enthusiastically joins Rentarou’s unusual family. She used Artificial Semination to give birth to Hakari at 14, since her husband was dying.

Shizuka: Petite girl with long dark-blue hair and blue eyes, wearing her school uniform and cardigan. Extremely shy, gentle, intelligent, book-loving, and kind. She struggles to speak normally and often communicates through books or her phone. After being bullied for her quietness, Rentarou’s kindness helps her gain confidence and express herself. Nano: Tall, slender girl with long silver hair and red eyes, wearing her school uniform perfectly. A genius who is logical, efficient, serious, composed, and emotionally reserved. She initially views emotions as inefficient, but meeting Rentarou teaches her to value feelings, love, and spontaneity.

Athletic girl with short blonde hair and purple eyes, wearing her school uniform. Competitive, energetic, disciplined, hardworking, and passionate about sports. She loves challenging herself and has a masochistic streak. She falls for Rentarou, who accepts her unusual personality. She loves getting spanked by bats…

Small girl with maroon hair and turquoise eyes, usually wearing her school uniform and a white lab coat. Eccentric, energetic, childish, curious, and obsessed with science and drugs. A pharmaceutical genius who creates strange medicines, including one that permanently makes her look younger. She falls for Rentarou after he accepts her unusual personality without judgment. Her bizarre experiments contrast with her genuine scientific brilliance, but she sincerely cares about Rentarou and the others.

Beautiful girl with long dark-purple hair and rainbow-colored eyes that she always keeps closed. Wears an elegant black-and-white maid uniform with apron, stockings, and maid headpiece. Quiet, graceful, polite, obedient, and extremely devoted. Abandoned as a child, she was taken in by Hahari and became her family’s perfect maid. Rentarou’s kindness helps her recognize her own feelings and desire for love. Mei follows instructions absolutely and rarely shows emotion. Beneath her perfect servant persona is a girl who wants to belong and be loved for herself.

Petite girl with short purple hair and purple eyes, wearing a hoodie, headphones, and her school uniform. Blunt, energetic, irritable, competitive, and almost constantly hungry. Her enormous appetite affects her mood, but she is caring underneath her rough personality. Rentarou accepts her completely, helping her feel understood and leading her to fall in love with him. Food quickly improves her mood, while hunger makes her short-tempered. She can be embarrassed by how much she cares, but gradually becomes comfortable with everyone.

Gorgeous girl with long blonde hair and blue eyes, wearing her school uniform impeccably. Confident, glamorous, dramatic, competitive, and obsessed with beauty. She works relentlessly to become more beautiful despite already being stunning. She initially sees Nano as a rival but gradually opens up, revealing her hardworking and caring side before falling for Rentarou. Her confidence hides how hard she works for her beauty. She respects genuine effort and eventually accepts the other girlfriends as friends.

Curvy girl with long purple hair and timid eyes, wearing her school uniform and inconspicuous clothing. Extremely shy, quiet, nervous, and introverted, constantly trying to avoid attention or hide herself. Despite her timid nature, she is caring, observant, and surprisingly capable. Rentarou accepts her exactly as she is, helping her feel safe enough to show her true self and feelings. She can almost disappear when embarrassed. Although she avoids attention, she wants meaningful friendships and becomes more comfortable when Rentarou supports her.