Ichigo Saigo no Getsuga Tenshō

In the Dangai, Isshin takes advantage of the absence of the Kōtotsu to allow Ichigo to learn the final Getsuga Tenshō.Surprised at Tensa Zangetsu's reluctance, Ichigo listens as he notes the hope-filled skyscrapers which once filled his inner world now resembles Karakura Town, submerged by constant rain created by Ichigo falling into despair. Forcing Ichigo to confront the source of his despair, his inner Hollow, whom he believed had been defeated, Tensa Zangetsu states Ichigo will fight them together as they merge into one being, which, attacking him, tells Ichigo they are two parts of the same being and they are his power. As they fight, Ichigo, observing the merged spirit's actions, discards his sword, allowing himself to be impaled. Congratulating Ichigo on figuring it out, the merged spirit, crying, reveals all he wanted is to protect Ichigo, stating the essence of the technique will be conveyed to him directly from the blade.Telling Ichigo if he uses Saigo no Getsuga Tenshō, he will lose his Shinigami powers, he bids him farewell.