In the town of Fukano, humans and youkai once lived together on enchanted soil. Strange stories still linger. Yukina Kamikake has returned to town with a friend — searching for something she lost. She meets Mutsuki Yohane, a sorcerer who inherited a bloodline old enough to remember when Fukano was built. Around them: a succubus afflicted with love, a youkai who knows every piece of school gossip, and a girl who understands nothing about magic but feels like an older sister. Yukina has more power than Mutsuki — and is looking for something he may be connected to. A short summer that feels long; a story of humans, spirits, and sorcerers.