The little sister of Mirai Momoyama.
Mature for her age, Hikari adores her family but is fairly hard on Mirai, usually expressing doubt or concern over her. She isn't intentionally mean or nasty though, and can be sweet deep down; even if she struggles to show her supportive side openly. Easily annoyed and blunt with her opinions, even towards her parents.
Despite how she behaves she is still a child, so she can often be found playing or spending the day drawing. She still takes naps and gets tired fairly easy. But she also helps out at the shop.
(Source: Kiratto Pri Chan Wikia)