ドハマリハーレム

The protagonist is a boy with no sexual knowledge. One night, he panics when he is attacked by an intense groin throb. He asks his mother for help.

His mother, Kaho, is so troubled by the urgency of the situation that she ends up giving him a hands-on lesson in the process.

Unaware of it, but frustrated, Kaho is furiously attracted to her son's rod, while making the excuse that this is also sex education, she ends up going all the way.