A first-year student in Class 4. He has an extremely sincere and fair personality, loving all his girlfriends with all his heart. He is meticulously considerate so that no one feels left out. He is so kind it's almost a fault. He also has a slightly eccentric side. He has great athletic nerves, excels at studying, and is an excellent cook. He loves egg dishes. He adores his girlfriends immensely. His birthday is May 1st. He is gentle, kind, and crazy about romance. He takes very good care of his girlfriends. He has a very soft and handsome face.

A first-year student in Class 4. The 1st girlfriend. A large-breasted, sexy-type mega-dere who actively seduces Rentaro and enjoys physical contact. She has a calculatedly perverted side but leads the atmosphere brightly. She is Hahari's daughter. She is frugal and speaks politely. Her birthday is June 22nd. She feels vicarious shame for Hahari's perverted antics.

A first-year student in Class 4. The 2nd girlfriend. She plays the tsundere role in the family. She is blunt on the outside but warm on the inside. She is flat-chested and incredibly strong. Her birthday is September 9th. She speaks informally.

A first-year student in Class 4. The 4th girlfriend. An expressionless genius girl who prioritizes efficiency and optimization. She shows little emotion but reveals a weak side in front of Rentaro and has a fear of heights. She calls others by their full names. She is extremely good at studying. Her birthday is March 14th.

A first-year student in Class 4. The 3rd girlfriend. A small library assistant who cannot speak. She communicates through a smartphone TTS. She is introverted and quiet but becomes active in front of Rentaro. She loves books and reading very much. Her birthday is November 1st.

A third-year student in Class 3. A member of the chemistry club. The 5th girlfriend. A genius pharmacist and inventor who enjoys drug experiments. She has the body of an 8-year-old due to a drug, but when she returns to her original form, she is tall and incredibly beautiful. She is full of genius, curiosity, and playfulness. She ends her sentences with "-nanoda." Her birthday is April 18th.

29 years old. The 6th girlfriend. Hakari's mother and a super-rich pervert, yet she plays the role of a kind mother. She loves cute things and has a mindset that money solves everything through her financial support and tolerance. She is currently the chairwoman of the high school. Her birthday is May 12th.

A third-year middle school student in Class 2. The 7th girlfriend. A girl with a huge appetite. When she's hungry, she becomes full of contempt and violent, but she's usually very cute. She loves delicious food extremely and feels happiness in the act of eating. She has a bit of a tsundere style. Her birthday is September 3rd.

A first-year student in Class 3. The 9th girlfriend. A member of the girls' baseball team and a masochist. She loves pain, especially being hit on the buttocks. She has a stoic personality, enduring with a smile, and is a hard worker who accepts any difficulty positively. She enjoys both mental and physical pain. She doesn't realize she's a masochist herself.

19 years old. The 8th girlfriend. A perfect maid who walks around with her eyes closed and serves her master with extreme devotion. She is fiercely loyal, dedicating everything to Rentaro and the family. Her eyes are rainbow-colored. Her birthday is May 10th.