https://www.dlsite.com/books/work/=/product_id/BJ305402.html
As always, please support the artist and buy his works.

Two hours after her first sugar moomy activity... a record of a married woman who was cuckolded in the couple's bedroom.

She is desperate to be loved by a young man... Her body bends backward under the violent use of her hips. This kind of relationship is absolutely wrong... but every time she is made to cum, her heart is filled with satisfaction...
Maki is a lonely married woman who is left alone by her husband. She is a lonely married woman who is neglected by her husband, and the only person who understands her is a boy named Satoshi who lives in the neighborhood.
One day, out of loneliness, Maki turns to an app that allows her to meet up with other men. But the man she meets up with is Tomo...?
Tomo, who actually thought Maki was beautiful, used the sugar mama activity to come on to her. She kisses him for the first time in a long time...and even though he resists, he persistently makes love to her sensitive spots, causing her to pant and leak her love juices.
The intense intercourse is already pushing her to the limit of her rationality... but she can't resist the hot cock...

Chapters 1-12 (Complete) (Chinese): /g/2485294/989cea7eab/

Chapter 1 (Japanese): /g/2165490/d2ee8c0514/

English Webtoon version: https://comiko.net/series/94423
https://hiperdex.com/manga/netorare-my-sugar-mama-in-her-husbands-bedroom/

Same author:
https://hiperdex.com/manga/my-2-step-brothers-are-ganging-up-on-me-english/
https://comiko.net/series/79671/2-ri-de-watashi-wo-ikasenaide-tsu-kurayami-majiwaru-kyoudai-futon
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https://hiperdex.com/manga/a-sexless-wife-finds-pleasures-in-a-sexual-beauty-treatment-and-cums-again-and-again/
https://comiko.net/series/126228/a-sexless-wife-finds-pleasures-in-a-sexual-beauty-treatment-and-cums-again-and-again
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https://comiko.net/series/126207/even-though-i-shouldn-t-cum-lewd-fingerings-of-my-boyfriend-s-big-brother
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https://hiperdex.com/manga/taiyos-sisters-in-law-need-his-seed/
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https://hiperdex.com/manga/its-time-for-sex-education/
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https://hiperdex.com/manga/at-night-shes-a-nymphomaniac/

Wrong...@Fofotron FMC is suggar mama she buy young guy and fuck her behing her husband back. Turns out husband also buy young girl who actually know young guy who are suggar boy for FMC. In short suggar boy fuck her to point where she from think this; I am cheating slut its so wrong. To this: My husband always dont care about me i need divorce him.
And yeah she divorce her husband and wait for her suggar boy who attempt in to college and come back to her after all. Straight up Josei manga where cheating whore did nothing wrong and her husband fuckin only one who are evil how dare he cheat ot his cheating wife who spend his money on suggar boy.

Base +5, Fofotron +9, likeyouknowwhatever +6, Koaen -30, gradius +6

I like colorful but this one doesn't have scenes as hot as Urakan and Minazuki Mikka.

There's a black and white version here: /g/2445834/dbcdb99b96/

Base +13, Fofotron +9