JUC-655 - Today might be a safe day to finish inside... Reika Saijo

Reika, who has been living with her son Naoto after losing her husband, decides to remarry to start a new life. Naoto, however, struggles to accept his mother's sudden remarriage. One day, he accidentally witnesses his mother being filled inside by his new stepfather. Mesmerized by his mother's ecstatic expression, Naoto is unaware that she has already become addicted to the pleasure of being finished inside.