Bleach is a "big three" shonen anime whose combat system has a few key traits that set it apart from Naruto and One Piece. While ninjutsu in Naruto is about using hand signs and chakra to create supernatural effects, and One Piece characters can eat a Devil Fruit to gain powers, the Soul Reapers in Bleach must embrace the power of friendship to use their zanpakuto, or soul-cutting swords.
Source:https://www.cbr.com/bleach-zanpakuto-sword-requirementss/