https://www.dlsite.com/maniax/work/=/product_id/RJ01074981.html
https://www.dmm.co.jp/dc/doujin/-/detail/=/cid=d_280251

大佬辛苦了

Base +1

[Synopsis]

The protagonist, Haruto, has a wife who is nine years older than him.
They get along well, but because they both work, their schedules don't match up and Haruto spends his days in frustration.
And Nana, his wife's co-worker and heroine of this work, also has similar worries.
One day, his wife brings her co-worker Nana over for a drink after work but they decide to drink at her house because they still haven't had enough.
The three of them, including Haruto, enjoy themselves drinking... but his wife, who doesn't have much to drink, quickly gets drunk and falls asleep.
And then-- from there, the relationship between Haruto and his wife's co-worker Nana develops...

Base +25, nuts987 +13