| Ubukata Hatsumi生方 はつみ |
| Hair | Antenna, Long, Spiky Bangs, Violet |
| Eyes | Amber, Tareme |
| Body | Pale, Slim, Teen |
| Clothes | Bra, Collar, Evening Gloves, Garter Belt Stockings, Hairpin, Hair Ribbon, Hat, Headband, Leotard, Maid's Dress, Naked, Nurse Uniform, One Piece Swimsuit, Panties, Pantyhose, Ribbon Tie, School Uniform, Thigh-high Stockings, Yukata |
| Personality | Clumsy, Honest, Naive, Serious, Shy, Timid |
| Role | Non-blood-related Sister, Schoolmate, Younger Sister |
| Engages in | Cosplay |
| Visual novels | Main character - Hajimete Doushi |
| Voiced by | Sakurai Miho |