Princess Connect: Regret Override — The Single Taboo That Saves the Fallen

This is the story of a boy who commits a taboo to save his lost comrades. The setting is the floating guild called Cafe Etoile, at the edge of the Astraea Continent. Its member is Rent, a boy who is a trainee cook. He is an ordinary boy — no talent for swords or magic. But his devotion to his friends is unmatched. One day, a mysterious monster called Void Gate appears before Rent and his friends. This monster erases the very existence of anyone it touches. His comrades vanish one after another

Princess Connect: Regret Override — The Single Taboo That Saves the Fallen - Episode 0