SPRD-969 - Better than my wife... A hot night with my mother-in-law

The premise is a daughter and her husband visiting the mother-in-law's house, where the mother-in-law's son (the daughter-in-law's brother) also lives. In Ren Shiraishi's previous works, it only went as far as the mother-in-law performing fellatio on her son, but this time they actually have sex. However, if the son is willing to go that far, it would have been interesting to expand the story to include a past affair with the daughter-in-law, explaining why the couple has no sex life. I hope they continue to build on their classic patterns while boldly exploring new directions.