Bleach is one of the most successful Shonen series of all time. Fans love the series because of the power systems, character designs, and action. Most of the characters are Soul Reapers, who all wield a special katana known as a Zanpakuto. The highest ranking Soul Reapers are great fighters, but some are far more dangerous than others.
Source:https://www.cbr.com/dangerous-bleach-soul-reapers/