“The most arrogant demon in the world found his weak spot in a human child — and that weakness completed him.”
A blade that cuts the servants of the afterlife — it can revive the dead, but cannot cut the living. His father's legacy.
A blade born from his own power. What it cuts cannot regenerate — a symbol of his fully realized strength in the later arcs.
Lethal poison from his claws that disintegrates on contact. The most immediate threat in close-range combat.
A cold perfectionist who undergoes slow, complete transformation. He began despising humans and resenting his father's legacy — then, through Rin and understanding Tenseiga, changed incrementally. His characteristic narrative style is change that refuses to announce itself: his actions prove what his words never admit. The slowest arc in the series, and the most complete.