Ienai Koto The Animation

A skilled educator stumbles upon her sister engaging in a steamy tryst with two lads at her abode. She deems it necessary to join the intimate escapade... all in the name of sibling solidarity. Episode 2 revolves around an amorous instructor who becomes embroiled in some scandalous exploits, leading her to embark on even more tantalizing encounters. Quite fitting if you ask me.