I sekai de chīto nōryoku o te ni shita ore wa, genjitsu sekai o mo musō suru gāruzusaido ~ kareinaru otome-tachi no bōken wa sekai o kaeta ~ (Associated Names)

Super popular cheat fantasy! The long-awaited spin-off series has begun! Yuuya Tenjou is a boy who possesses cheats in every aspect. Behind his unparalleled feats, there are always ‘girls’―”We’re going on a journey to save those who are in trouble!―The journey of the girls who want to fascinate even the Cheat King (?) and change…