Yoakemono

In the remote mountains, two inseparable boys named Gin and Jinrou have forged themselves into a formidable team through harsh training and survival. Yearning for purpose beyond their isolated existence, they set their sights on the distant capital, where the legendary Shinsengumi - an elite warrior force - offers the promise of belonging and strength. However, the capital proves to be a world apart from everything they've known. The city teems with mysterious individuals whose presence unsettles Jinrou's heightened senses, hinting at powers and secrets that lie beneath the surface of human appearance. As the boys confront challenges that test both their skills and their bond, they must navigate a society where strength takes many forms and loyalty can be both a weapon and a weakness. (Source: MangaHelpers)