Ichika acts as the eldest sister of her sisters, as she seems to have a calm and composed demeanor; making herself an approachable person.[12] Fuutarou Uesugi noted that her smile is fake and encourage her to put away that kind of smile.[13]

She initially had pessimistic attitude towards the sisters' learning capabilities, making her one of the obstacles for Fuutarou tutoring lessons early in the story.[14] After being inspired by him, she began to change her mind and started to take studying s