Nettle pain Final by Agunosutosu (eng) - Adult Sex Game

Play as Fergus, a young man striving to become a hero and heir of the town’s dojo.
Life seems good for Fergus, as the dojo’s current master is the father of his ch*ldhood friend Makia – who seems to share his feelings, being very affectionate and supportive of our MC.

However, that's soon changed by the arrivial of Pilgas – former ch*ldhood friend of Fergus and Makia, and was the dojo’s best pupil up until his disappearance in an undisclosed incident.
Now that he's returned, he demands the dojo for himself, a claim that only Fergus can deny by beating Pilgas in a personal duel. As such, it is up to the MC to save the dojo, and keep his girl.

SPOILER: Story