[Shiroganean (Kuromogu)] I saved a gal, then I think I reincarnated into another world and my life as a riajuu began! [Aishi21]

After rescuing a gal and her cat, ordinary boy Yuki watches his quiet life transform into something unrecognizable—Hanasaki-san declares them best friends, pins him down with clingy cuddles he can't escape, and repays her hero in a maid outfit with 'naughty favors' for his magnificent cock. A few months later, after-school karaoke with the gals has him feeling like a true riajuu, right up until two of them corner him on the couch, cooing for him to close his eyes while they pull down his zipper. One grateful girl's devotion snowballs into a full gyaru harem complete with collars, cameras, and consequences that become visible months down the line.