Obaba

Maina's grandmother and the matriarch of the village. She's a harsh, terrifying, and unrelenting woman. She rules the village and everyone listens to her. She demands that the girls become pregnant by Ryuji and refuses to listen to any of their complaints. She sets up a 'Pregnancy Plan' where all the girls live with Ryuji and tells them all they're his sex slaves. She also sets up 'Impregnation Events' to help them along.

She has all the contraceptives in the village removed and gives the girls pregnancy tests when they complain about it.