Tenshitō (spirit)

Tenshitō (天私闘, Heaven's Personal Struggle) also known as Tengoku Ketsugi (天国決議, Resolved Heaven) in Bankai, and Ōmukashi Ten'notsurugi (大昔天の剣, Ancient Sword of Heaven) is the Zanpakutō belonging to the legendary Yonkō of Zanjutsu, Hikaru Kurosaki.