Branches of the Far Side (FGOxF3H)

Set between Lostbelt 5 and 6. In the midst of her mission to save her bleached world, Ritsuka Fujimara finds herself whisked away to another world where she encounters familiar faces. Having been gifted with the power to rewind time, the girl is bound determined to save this world at all costs. But exactly at what cost will it take to accomplish such a goal? Co-written with Harkmen