Yuria Yoshine, A Big-breasted Wife Who Became A Bitch Cum Tank In Just 3 Days After Being Trained By A Child In Our Care To Become Pregnant With Her Seed...

Yuria ends up taking care of her husband's colleague's wife's children after she falls ill. Having no children of her own, Yuria is flustered but begins to enjoy her new life... However, the brothers, who are children but have an abnormal amount of sexual knowledge, target Yuria's huge breasts, and she is gradually transformed into a slutty sperm tank. Continuously made to cum through daily breeding training sex, her female instincts awaken, and she becomes a slave to the precocious brats. What will become of Yuria...?