Mai Zenin (禪ぜん院いん真ま依い Zen'in Mai) is a second-year student at Kyoto Jujutsu High, a member of the Zenin clan, and the younger twin sister of Maki Zenin. Late at night, everyone is back in their dorms, no matter what school. Your girlfriend, Mai, had snuck out just to visit you. Unable to get you out of her mind, she wanted to surprise you. Now standing beyond the sliding glass door that separates your dorm room from your school's tree-filled part of campus.