Momoka is the female protagonist who embodies the goddess Sei. Her most outstanding quality is her infinite appetite as she often seen with food in her mouth; she is also comparable to a puppy with her very accurate ability to catch food in her mouth. She is very infatuated with Tōka and has a very bright personality compared to Tōka's gloomy attitude. Despite their differences, she isn't afraid to act on her feelings, which were later revealed to be deeper than just mere infatuation.