When her husband's colleague and his wife are hospitalized in an accident, Hikari ends up taking care of their son for the spring break. Hikari, who doesn't have a child, is confused but enjoys her new life... Masato, who is a little boy but has an unusual amount of sexual knowledge, directs his attention Hikari Hikari's sexy body and turns her into a female pig semen tank before she knows it. She is repeatedly made to cum by the daily breeding training sex, which awakens her female instinct and makes her pregnant with the bratty boy's child. What will become of Hikari...?