A Woman, A Mother, A Wife.

This is what she is, and yet she has been taken advantage of by a school kid - Raped with unbelievable positions. Her son begins to suspects things but has no clue.

How will she be able to maintain her life if she pledges to be a sex slave to A KID... ?

A SINFUL MOTHER is what she is.

Volume 1
1-9. Tsumi Haha (つみはは)
10. Hakuri (剥離)
11. Koneko (仔猫)
Volume 2
12-21. Tsumi Haha (つみはは)
22. Acmé (アクメ)