Kagura of the Moonlight: The Immortal Bride and the Reincarnated Programmer

Sora Kagura had everything—until a single virus erased every line of code he'd ever written and dragged him into a world where the moon hangs three times too large and nothing follows the rules he knows. Now he's stranded in a parallel world with no stamina, no combat skills, and no way home. His only lead: a torn nameplate reading "Yuzaki." His only guide: Kougetsu Kaguya, a masked girl in a black kimono who claims he carries the "blood of the moon" and that she needs his power. But what powe