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Dry bones give birth to blood-red flowers, weeping in... The seven people who bear the seven deadly sins, first person. The collision of good and evil, black and white

A traveler from another world who has gone astray, starts a new journey in another life, meets, gets to know each other, gets to know each other, and has friendship. The gears of fate begin to turn! Rewrite the world that ends in tragedy into a happy ending! A traveler from another world.

When the end comes, creation takes thousands of generations, and destruction only takes a moment. In the face of disaster, it is like a grain of sand in a huge wave; the real world and everything return to zero. When you stare into the abyss, the abyss stares into you... Step on the void and sing a song, the end, the battle, the winner lives, the loser dies.

Every time you open your eyes, you find that you are in a place you have never been before. Come here and escape, or untie the "knot" of this world.

Sugi Ito, a patient with severe form of secondary school disease, was forced to join a club called "Umilow Coral" by accident on the second day of school. The members of the club have even more eccentric personalities. In their daily lives, they are intertwined with each other, with daily encounters and strange stories.