Netmarble has rolled out a new collaboration event for its mobile RPG, Fate/Grand Order, titled 'Witch on the Holy Night After Night / Kumano Hot Spring Murder Case ~The Robin Watched! The Witch Dies Twice~'.

This crossover is based on 'Witch on the Holy Night', developed by TYPE-MOON, and features a script penned by none other than the studio's lead scenario writer, Kinoko Nasu.

The story whisks you away to the 'Kumano Hot Spring', a place rumoured to harbour five hidden 'secret springs' that grant wishes. You'll team up with the likes of Aoko Aozaki and Sojuro Shizuki from Witch on the Holy Night for some spectral exorcism battles, only for a murder case to throw a spanner in the works.

If you manage to clear the main quests, you can bag yourself the 4-star (SR) Sojuro Shizuki. Complete certain event missions, and that swanky 'Misaki High School Uniform' Mystic Code is yours. Of course, there's also an event pickup featuring 5-star (SSR) Aoko Aozaki and 5-star (SSR) Alice Kuonji for those feeling lucky with their pulls.

As a login bonus, any player who has cleared 'Singularity F: Flame Contaminated City Fuyuki' will receive three Golden Fruits and eighteen Silver Fruits. Additionally, strengthening quests for 4-star (SR) Fujino Asagami and 4-star (SR) Calamity Jane have been added to the game.

You can find the official Fate/Grand Order website for more details.