Hoshera (EN)

Blurb :
A pack of wolves attacks Yujin village, killing hundreds of residents. As a result, Yujin also lost Yoichi, the person he considered his own brother.

Eventually, he encountered a group of people seeking revenge, where he met Mokku, a strange creature that could talk.

Mokku offered him a deal to help him achieve his revenge. At first, Yujin refused, but he was smart enough to realize that he had no chance of pursuing revenge on his own.

He had to start from the bottom to uncover who was responsible for the incident. Along the way, Yujin would meet Yoichi's biological mother, enter her family, and assume Yoichi's identity to blend into a middle-class household.