https://www.dlsite.com/comic/work/=/product_id/BJ222498.html
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Married Couple's Unsex Life: My Husband Wants to Fuck But I Don't

Megumi, who has a good-looking husband and a troubled child, is a housewife in her early years with a son in kindergarten.
Her current problem is that she doesn't want to have sex with her husband. She doesn't feel like having sex with her husband anymore.
Despite Megumi's feelings, her husband keeps asking her to have sex with him every night. How should she refuse his invitation tonight?
This is the start of a series of articles on the delicate nature of sex between married couples!
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At first I felt sorry for Eiichi, the husband, but that quickly switched for sympathy for Megumi, the wife, as literally everyone around her (her husband, her male friend, her best female friend) are all utterly insane.
The poor woman is all alone with her child.
Tbf, I only gathered that from the pics and reviews, as I don't kknow japanese. Could someone tell me whats going on in the story?