I creampied my wife's mother

Ryo married his wife, Saki for about a year... Ryo, who replaces Saki, a highly educated and career office worker and is in charge of all things housework, is extremely fed up with his current life, where his wife's work is busy and the couple's conversations are not good enough. One day, my stepmother Nozomi is seen masturbating as usual in between housework...