It drops you inside a sealed city and refuses to explain anything, which is either the appeal or the dealbreaker. That opening move is genuinely nasty: one high-frequency tone, red mist over a Tokyo suburb, and every human and animal in earshot goes down at once. Then the government does the thing governments in anime never do, writes off the capital as a virus zone, walls it off, and relocates the whole apparatus to Osaka. Six days later the bodies sit up, and nobody in charge is left inside to ask why. This is a Square Enix arcade card game trying to fit an entire mythos into twelve episodes, so the lore arrives in chunks and the blood arrives faster. Watch it for the 2030 Tokyo that got left behind the barricade.

A strange high-frequency sound rings out over Tokyo in 2030, and a red mist settles in; every person and animal who hears it falls unconscious. Fearing an unknown virus, the government seals off the city. Six days later the sleepers wake as if nothing happened, and the people trapped inside slowly get Tokyo running again. Soon, though, odd incidents break out along the edge of the blockade. Some young people discover a hidden power in their blood, and something they cannot name pulls them toward one another to face a harsh fate that may cost them their lives. The story blends action with the supernatural.