https://comic.iowl.jp/titles/195250/volumes
https://coolmic.me/titles/3251
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I've never heard of raw sperm donation... ~ My helpless body being developed by my husband's student~

Japanese summary:
"I've done it... with someone other than my husband...!" I should refuse to do this, but I feel it so much that I cry... I'm in my third year of trying to conceive... We can't have children, and our relationship as a couple has deteriorated.
In desperation, I registered on a “sperm donor matching app,” but the man who showed up at the meeting place was my husband's student, Ayato!
He brought me to a hotel while drunk and said, “Now I'm going to give you what you've always wanted...” and he gave me a thick, hard cock...! I told him no, but my body was honest...I couldn't refuse Ayato.... The climax I couldn't feel when I was with my husband... am I being developed...?
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English summary:
A woman has spent the last few years trying to have a child, but her husband seems to have a low sperm count. That when she stumbles across a sperm donor matching site. When she meets up with her match, it turns into a night she’ll never forget.

English Webtoon version: https://hiperdex.com/manga/impregnate-me-cause-my-husband-cant/

When NTR is a joke

Base +6

Mam maybe you should divorce your husband if you want kid or try to adopt one?
NTR wife: Naaah i love my husband and i already planned at least 7 kids with my lover) Just dont tell my husband if he dont know its not hurts him)

Base +5