An OVA released between episodes 5 and 6 of AIKa, that takes place between episodes 4 and 5.
| Actor | Role |
|---|---|
 Rei SakumaAika Sumeragi (voice) | Aika Sumeragi (voice) |
 Hiroko KonishiRion Aida (voice) | Rion Aida (voice) |
 Sakiko TamagawaMaypia Alexymetalia (voice) | Maypia Alexymetalia (voice) |
 Akemi OkamuraNina Etsuko (voice) | Nina Etsuko (voice) |