Something genuinely rotten moves through Tokyo, and these five kids keep stumbling into it because they're the only ones who can see it. The show treats horror like contagion, each episode pulls another thread, and the friendships holding them together fray a little more under the weight of what they're learning about the city they live in. By the time you realize this isn't going to end with them winning, you're already too invested in watching them try anyway.

Five seemingly ordinary high school students become vessels for supernatural power when the Ryumyaku, a flow of arcane energy, is violently disrupted. Tatsuma arrives at Magami Academy in Shinjuku as a quiet, mysterious transfer student whose martial arts skill wins him the friendship of Kyouichi, the class delinquent. Through chance meetings, they gather with Yuuya from the wrestling club, Komaki from the archery team, and Aoi, the student council president. When the Dragon Vein surges, each of them awakens a latent ability. Hisui, heir of the Kisaragi Clan, explains their new gifts and their duty to defend the city from demons called Oni. As the group fights these creatures, they learn that someone using the Dark Arts forced the disruption and hopes to revive a long-dead evil. The five must face their own fears and flaws, and eventually their destinies, to protect Tokyo.