A Zanpakutō is a fictional sword featured in the anime and manga series Bleach, created by Tite Kubo. Each Zanpakutō is unique to its wielder, known as a Soul Reaper, and represents their soul. The sword has two main forms: the sealed form, which resembles a regular katana, and the released form, which unleashes its true power and abilities. The Zanpakutō has a distinct name and can be summoned through a special command. It is not just a weapon; it embodies the spirit of the Soul Reaper and can communicate with them. Mastery of a Zanpakutō is essential for a Soul Reaper to effectively combat evil spirits known as Hollows.