APNS-113 Humiliation training from the neighbor The newlywed young wife is corrupted by their venomous fangs... Her purity towards her husband is trampled on day after day... Riko Mizuki

Riko, the young wife, got married right after graduating. Her partner, Takuma, was her teacher during her student days, and they had secretly dated back then. Although their relationship was a secret, their dating was pure. Their first sexual intercourse was recent. Now they are living happily in a modest way. One day, absurdity strikes suddenly. A yakuza named Ito moved into the next room and started causing trouble, leading the couple to fall into hell…