Komamura's "zanpakutō" is . Once released with the command , Tenken creates various body parts of a giant to copy whatever body part Komamura moves; for example, should Komamura swing his sword, a gigantic disembodied arm wielding a sword appears and does the same thing. Tenken's "bankai", brings forth the entire giant, which also copies Komamura's movements. Though extremely destructive, Komamura's "bankai" has a major weakness; any damage inflicted on the giant is reflected upon Komamura, and any damage done to the giant's sword is reflected upon his "zanpakutō", as shown when Aizen breaks Komamura's sword and severs his left arm. This weakness essentially makes it a bigger target to a strong enough opponent. According to Tosen, Komamura's Bankai is supposed to finish off the opponent in one hit, which could mean its weakness is to balance out its immense strength. While the weakness may seem overwhelming at first glance, Komamura and his "bankai" sharing one another's pain is also an advantage; because of the connection the two share, Komamura's "bankai" will heal at a rate proportional to how much Komamura heals, making it the only "bankai" in the Soul Society capable of being restored without needing to be modified or reforged. After attaining his Human Transformation technique, Komamura's "bankai" gains a new ability, . In this form, the giant sheds its armor and becomes more agile and demonic in appearance. Due to the nature of Komamura's Human Transformation Technique, the giant and Komamura become virtually immune to physical damage.