I'm stealing here from Fub: "There's this circle of cherry trees that was used as a gate between the youkai and human world. In modern times, a city has sprung up, and youkai and humans coexist there. Of course, not every youkai wants to keep to the rules, and it's up to a team of four youkai and a single human to keep the peace. Akina is the last of the 'tuners', who can possess the youkai and send them through the gate."
Quite enjoyable. Well-drawn, interesting characters and a fastmoving pace.