-shinyuu No Kachan Ninshin Sasere... — Netori Yuusha

This genre falls under (protagonist steals someone else’s lover/partner, often with a revenge or dominance angle), distinct from "netorare" (NTR) where the protagonist is the one being stolen from.

If this were a manga or light novel:

This term usually refers to a perspective where the protagonist is the one pursuing a character who is already in a relationship or has a close bond with another person. Netori Yuusha -Shinyuu no Kachan Ninshin Sasere...

These works are typically part of the "doujinshi" or adult game (Eroge) industry. They are intended for adult audiences and are consumed as fictional explorations of complex, and often controversial, human emotions and desires. This genre falls under (protagonist steals someone else’s

Thus, the full title is likely: “The Netori Hero: Make My Best Friend’s Mother Pregnant and Make Her Regret It.” They are intended for adult audiences and are

The story generally follows a protagonist who operates within a fantasy or "hero" setting. Unlike traditional heroic tales, the narrative focuses on