Komamura performs his Bankai, Kokujo Tengen Myo-oh, to subdue Tosen. However, Tosen has already deduced the weakness of Komamura’s Bankai from years of working closely together. Despite the damage received, Komamura refuses to give up on his former friend, throwing out the question of why Tosen chose to become a Soul Reaper in the first place. (thetvdb.com)