Shin

Summary
A boy from Yuba's village that lived there with his parents and little sister Sayo, when he's still a child he lost his parents in an epidemic and since then he live alone with Sayo, something that turn Shin into an overprotective brother, after their parents' deaths Shin and Sayo were raised with the joint effort of all of their neighbors, specially Yuba who then teach them spirit arts along Ruri while treating them as her siblings, along the time Shin became the village's young boys leader and began to work as hunter under Dora's tutelage.

When Rio live in the village, Yuba asked him to introduce Rio to Dora for him to begin to work as a hunter along them, Shin noticed since the first moment Sayo's feelings for Rio and his over protectiveness towards her made him to constantly try to compete with Rio and to not be able of acknowledging him as a part of the village.

Some weeks later Shin lead all the young boys that Rio made to feel inferior to him and that were jealous of how much time he spent with Ruri to say to Rio altogether that he wasn't welcomed in the village but they were dealt with easily by Ruri, they continue to dislike Rio but they didn't make any kind of harassment towards him, after seeing what kind of treatment Rio gave to Gon and his friend after the yobai incident they promised themselves to never again pick a fight with him and finally acknowledged Rio after saving Ruri and Sayo from Gon.

He wouldn't reject anymore Sayo's feelings and would more or less try to support her with them like when he found Sayo crying in their house's entrance and when he discovered that it was because Rio told to her that he would leave the village in winter he went dogeza in front of Rio asking him to stay, when Rio rejected Sayo he approach her just after that to cheer her up, at that time Gouki offered them to follow after Rio secretly along with him, if they really did it or not is still unconfirmed because no one from Yagumo has appeared again on the novel since the volume 3.

Personality
A kind but clumsy guy bad at thinking before acting and an overprotective older brother.

Relationship
Rio Karasuki: friend albeit reluctantly and fellow hunter.

Ruri: childhood friend, it was hinted that he liked her like every boy in the village but there wasn't any sign of romantic love between them.

Sayo: his little sister and only relative alive.

Gouki Saga: his employer and martial arts master, at least in the WN.