Kagurabachi Vol.1 (Jump Comics)

Chihiro, a boy who aspires to be a swordsmith, is training under his father. A playful father and a taciturn son. He thought his days of constant laughter would last forever, but one day tragedy strikes.... A bloody bond and a life of no return. A boy burns with hatred, and the flame of determination burns in his heart....

Note: This is in japanese language