Motto! Haramase! Honoo no Oppai Isekai Oppai Maid Gakuen!

The protagonist is an ultimate boob and maid lover. He visits a maid café daily where his childhood friend Mei works, dreaming of becoming a true master while playing a maid-themed social game. One day, his phone screen glows, and he, Mei, and her mother Maasa are transported to another world. They land in a bathhouse of a maid academy, where races learn to become maids! Nine maids with jiggling breasts catch their attention. The chairwoman reveals these nine maids are cursed, unable to serve masters—they are 'Damned Maids.' But the protagonist, as an otherworlder, is immune to the curse, making them able to serve him. Asked to become their master, he eagerly agrees. To win the 'MAID-1 Grand Prix,' the maids compete in erotic services, with their mothers supporting them. The protagonist gains a 'dirty service skill,' boosting their sincerity and ulterior motives. This titty maid army, led by ten maids and their mothers, aims to shake up the competition! 'I'll raise all my titty maids into perverted maids with the best intentions and ulterior motives!'