Oinari-sama to Dadaama Kozukurikon ~Nuicha Dame! Takusan Dashite Oneesan no Shikyuu Ippai ni Shite Kudasai ne♪~

Takuma, scion of a noble lineage, receives a startling command from his grandfather: infuse a goddess tainted by dark forces with his pure essence. Reuniting with childhood friend Yuuko, he learns the only way to purge her corruption is through an intimate act—to ejaculate within her and kindle new life. A tale of duty, desire, and the sacred bond between mortal and deity unfolds.