Seimin! Sister Sophie wa Haramase Onaho -Aizu Hitotsu de Kyokon Suuhaisha ni Narisagaru Bakunyuu Seishokusha | 済民！シスター・ソフィーは孕ませオナホ ～合図一つで巨根崇拝者に成り下がる爆乳性職者～

The protagonist, a lustful and lazy man, was working under the beautiful Sister Sophie, who was beloved by the villagers, his desires growing with each passing day.

One day, he obtained the "〇〇" grimoire and using its power, taught Sophie vulgar language and actions, successfully taking her virginity. Fueled by his lust and sometimes involving the entire village, he began a life of inseminating the depraved, perverted Sister Sophie.