He leads the Itto-ryu as Manji's equal—a swordsman with prodigious skill and an emotionally distant demeanor. His whole philosophy centers on building a dojo stripped of tradition and formality, where the only measure that matters is killing efficiency. That pragmatism shapes everything he does, though he's less of a cold machine than he first appears; he notably spares Rin when she comes at him, suggesting some capacity for restraint.
His upbringing explains a lot. His grandfather raised him with abuse, a disgraced swordsman cast out by the Asano dojo (Rin's family's school), and that brutal foundation clearly molded his worldview. Still, despite the ruthlessness, Anotsu isn't purely inhuman—he's shrewd enough to know when mercy serves his interests.
His main weapon is Kabutsuchi, a Nepalese-style axe named "Head Hammer," which he wields with devastating effect. He also carries a sword of the same name, though he pulls it out rarely. The axe is really his signature tool, the one that defines how he fights.
Content compiled by AnimeList.moe from publicly available sources.