When the Ouroboros corruption finally ended with all the EXRs returning to the island, everyone enjoyed the little time of peace which invited a time of rest. Although in this period, the Ouroboros returned ready to make another attack on the five world with a secret weapon. An unexpected event occurs that will change the very existence of the five worlds.

With the Uroboros defeated, the girls at the island of Seiran are left bored and with nothing else to do than doing stupid things and flirting with each others. [Crack fic]