from Nakaimo - My Sister Is Among Them! (Kono Naka ni Hitori, Imouto ga Iru!)
Unfitting her role as the head of the Student Council, Mana has a childish personality which results in many times Rinka had to step in an rein her back. However, normally Mana is on the quieter side except for big events, where she gets really excited and tends to be more outgoing and loud.
Nakaimo - My Sister Is Among Them! (Kono Naka ni Hitori, Imouto ga Iru!)
