Aina
アイナ
| Ainaアイナ | |
| Hair | Parted to Side, Short, White |
| Eyes | Green, Tsurime |
| Body | Pale, Slim, Teen |
| Clothes | Brooch, Cravat, Gloves, Monocle, Suit, Trousers, Uniform |
| Personality | Loyal, Proactive, Stoic |
| Role | Butler, Friend |
| Engages in | Cross-dressing |
| Engages in (Sexual) | Not Sexually Involved |
| Visual novels | Side character - Duelist x Engage |
| Voiced by | Oukawa Mio |