| Matsuyama Riru松山 里瑠 |
| Hair | Red, Shoulder-length |
| Eyes | Violet |
| Body | Pale, Teen |
| Clothes | Cheerleading Uniform, Garter Belt Stockings, Kemonomimi Headband, Maid's Dress, Maid's Headdress, Mini-dress, Nurse Uniform, Nurse's Cap, Over The Knee Socks, Pajamas, Ribbon Hair Tie, School Uniform, Sport Bloomers |
| Personality | Brother Complex, Puffy |
| Role | Full Sister, High School Student, Younger Sister |
| Engages in | Cosplay |
| Subject of | Pregnancy |
| Visual novels | Main character - Nee~ Onii-chaa~n ~Imouto-tachi no Dokkidoki Yuuwaku Kassen!~ |