S to M Ecstasy

Masanao Moriyama is an honest man who lives happily with his beloved wife and son, based on the principle of "never telling a lie." Until he meets Sumire, a beautiful babysitter. A series of lewd and lascivious traps will tempt this earnest man! Will Masanao be able to protect his family and his principles? And what is Sumire's true purpose...?

(Source: Nihonbungeisha, translated)