Noboru Amakawa is given a mission by Kirika: to impregnate ten thousand *oni* maidens. This is the village of the "Oni-Nyū-Musume" (Ogre-Breasted Maidens)—girls who transform into *oni* (ogres) and sprout horns if their breasts grow too large. It is said that their sexual desire intensifies in proportion to their breast size, making self-control impossible. A welcoming "Arc de Triomphe" of massive breasts!! A forest of boobs stretching on endlessly... Crushed by the maidens' breasts, drowning in a sea of ​​cleavage— the breast-filled welcoming festivities are only just beginning. Based on the original work: Includes "Oni-Nyū Story: Chapter 2" from *Onichichi Harem*.