[Shinjugai (Takeda Hiromitsu)] C94 Rakugakichou [Decensored]

Genius mage Terena seems to have it all—massive breasts, a loving hero named Kurt, and a royal favor that gifts the couple a noble love nest—until the king asks her to tutor Joseph, his friend's precocious young son. Cooking lessons become a cover for sneaky anal sessions behind her oblivious boyfriend's back, and wriggling parasites suppressed in her body unlock a hunger she can no longer hide, all while the penis-worshipping Pinis Church circles ever closer. By the time the faithful congregation lines up to worship her lewd body, Terena is ahegao-deep in group debauchery, gleefully trading her hero's shabby cock for her new role as an onahole wife.