College student Karen takes up Gun Gale Online and gets a reputation as the Pink Demon. Then her gaming buddy Pitohui asks her to join the Squad Jam.

Genius investigator Keith Flick rejoins the royal police force just as serial killer "B" emerges. Mysterious youth Koku may be an ally, or a target.

The theft of the Greater Grail from Fuyuki City leads to a splintered timeline in which the Great Holy Grail War is waged on an unprecedented scale.

Beings with supernatural powers join together to fight against supernatural villains.