- Voice Actor (CV)
- Ayaka Suwa
- Role
- Supporting
- Identity
- An advanced autonomous android developed by the Mahougasawa Foundation, enrolled as a first-year Class F student at Hatagaya Academy and serving as the ninja specialist within the Adventure Dormitory
Personality
Reserved
Emotionally Restrained
Altruistic
Analytically Precise
Ruri Ninjabayashi is a cutting-edge humanoid android created by the Mahougasawa Foundation, integrated into Hatagaya Academy as a student to provide crucial support to the Adventure Dormitory during times of crisis. Indistinguishable from an ordinary person in appearance, she displays minimal emotional expression and habitually responds to instructions with a distinctive 'Y/N' verbal pattern. Although originally configured to play the role of protagonist Sota Hatagata's 'little sister,' her shared daily experiences gradually give rise to a genuine and heartfelt desire to protect those around her.