Hakumei Ni Michiru Manga

The youngest son of the Shin family, Shinhou, has looked up to Shousei, his childhood friend and mentor, since his early years. He pledges to become the strongest in the Shin family and to defeat Shousei, the strong, beautiful, and dignified person he admires and trusts. However, the feud between their families compels them to turn their weapons on one another. Shinhou, ordered to eradicate the entire Shou family, refuses to fight Shousei—the one he loves and holds dear—and lets him, the only survivor, escape. In this act, he chooses to diverge from the path they once shared, fully aware that they will never cross paths again. Fifty years after their separation, Shinhou returns to his family home following his father's murder, only to encounter Shousei, whom he believed he would never see again.