Aika
アイカ
| Aikaアイカ | |
| Hair | Brown, Bun, Shoulder-length |
| Eyes | Amber |
| Body | Big Breasts, Pale, Young-adult |
| Personality | Emotional, Friendly, Honest, Kind, Protective, Serious, Wise |
| Role | Older Sister |
| Subject of | Pregnancy |
| Visual novels | Main character - Boku no H na Natsuyasumi ~Inaka de Sugosu Hitonatsu no Omoide~ |
| Voiced by | Ayana Maria |
DescriptionYurika's slightly elder and caring sister. | |