Demon Slayer: Twin Breath

"Don't worry about you joining Xuan Mi and becoming our stepson. We two pillars will guarantee your mother's life with our lives. If your mother hurts someone, the two of us will commit seppuku together with the two of you." "Twin Breaths. Six Patterns. Mysteries. Twin Moons Death Knell!" Until the decisive battle of Mugen City, Han Shengyang officially faced Tsukuni Iwakatsu, or should be called Uegen Ichikoku Death Eyes. "We are really similar, we both have a younger brother, and both of us died in our own hands!