https://www.dlsite.com/maniax/work/=/product_id/RJ01460679.html
https://www.dmm.co.jp/dc/doujin/-/detail/=/cid=d_658333/

Dumb wife gets blackmailed over the sounds she made when masturbating inside her house. Then because husband is overworking himself to give her the best to his wife is too tired on a work project to attend her needs so she immediately doubts him and cheats on him with the neighbor. That's it.

Base +22, Senpai SAP +5, your_name +6, Fofotron +26, derdie -19, BamBlackStar -11, Asarta +6, Coledas Ukgent -19, MelmothTheWanderer -30, THeVaSHok1 +6

You missed the part that pushes Rika over the edge, when she tries yet again to gain Hiro's attention she smells a different fragrance on him, a different perfume, so she breaks down, assuming the worst case scenario (he is cheating on her) so she stops caring and falls on Isami's lap for good.

No confirmation that Jiro is cheating though, so it might be some female colleague rubbing on him or he was something along the lines of work mandated drinks at a hostess bar, at any case nothing is shown. Jiro is congratulated at the end for his good job, everyone teases him about his hot wife and he tries to call her to finally give Rika some attention, but it is over.

--------------------------------------
The good old excuse to cheat because your spouse doesn't give you any attention is as old as time, it's stupid, but I cannot give a break to a man who ignores his wife this much over work either, that's too much, work over family will always have disastrous consequences with your kids, wife, etc. in the long run.

Base +9, Fofotron +26, derdie +19, BamBlackStar +11, kemohun04 +6, Asarta +6, Coledas Ukgent +19, nuts987 +14, THeVaSHok1 -6

全篇没看到吊带袜。。。

Base +6, dark rider van +9

樓上的在胡說什麼？明明就有

Base +5, AzusaBana +4

great work!

Base +4

Bro giving everthing to work for fucking 6 month without care shit of his wife and the last straw is unfamilar perfume that he get from cabaret bar which he need to go for entertained higher up.

Not saying the wife at fault she's too dumb for that stupid blackmail but he is ignore his wife too.

Base +7, THeVaSHok1 -6, derdie +19