Tsurugi Okkotsu

Tsurugi Okkotsu is the grandson of Maki Zenin and Yuta Okkotsu, and the older twin brother of Yuka Okkotsu. He inherited his grandmother Maki's Heavenly Restriction, granting him almost no cursed energy of his own in exchange for superhuman physical ability. To compensate, he wields a cursed tool katana called Honoyagi — a flame-infused blade — and channels the New Shadow Style using the cursed energy within his weapon rather than himself. Fiercely independent and driven to prove himself to the Gojo clan, Tsurugi holds Yuta's ring until he feels he's strong enough to return it to his sister.

Tsurugi's arc is one of controlled demolition: a young man who built his entire identity around self-sufficiency is forced, chapter by chapter, to let others in. His discovery of Yuka's illness does not break him — it redirects him. The research he undertakes, the impossible duel he helps facilitate, the moment in Chapter 23 where he fights in perfect synchrony with Yuka covering Maru's exposure during the Ritual of Harmony — these are the actions of someone who has learned that strength is most powerful when it serves something beyond itself. His relationship with Maru moves from guarded skepticism to genuine respect, one shared crisis at a time.