Sonozaki Mion

Mion is one grade higher than Keiichi. She is the class representative.

She is the active class representative type, which is the second most common type.

She is a leader, someone who makes friends with everyone, regardless of gender or age.

Because of her high-strung, easy-going, hyperactive personality, those around her never have to be bored. She is about the best kind of friend anyone could wish for.

Her personality is somewhat marred by a tendency to sound like an old man, but that's something to be forgiven.

Mion likes games of all kinds, be they card games, board games or video games. Because of who she is, her games tend to be high-tension. It's to be expected.

She plays with her friends in the context of club activity.

Spoiler

Mion was born under the name "Sonozaki Shion", but had swapped places with her twin sister on the day that the heir to the family head was to be given the demon tattoo, and as such permanently assumed the role of "Sonozaki Mion". She denies knowing about the tattoo arrangement beforehand.