Hitomi Tomozaki
Hitomi Tomozaki is the party organizer, introduced in chapter 6 vol. 2: Sunday Lovers. Sora attends the party with Runa as her pretend boyfriend. Hitomi is Runa's friend. She held the orgy party that Runa tricked Sora into going, and had her sight set on Sora at the party's start. [spolier] She was the first one to have sex with Sora at the party, and her boyfriend was the one who took Runa's virginity. After this party, Hitomi invited Runa to return many times, but because Runa only felt good with Sora, she did not return.[/spolier]