The Final Getsuga Tensho!? Ichigo's Training!

The Dangai reduces time to the point that if one were to stay in that world for 2,000 hours, which is more or less three months, only one hour will have passed in the outside world, making it ideal for training purposes now that the Koutotsu has been destroyed. Isshin devises a method for Ichigo to learn the Final Getsuga Tenshou in 2,000 hours in that world. To do that, Ichigo must directly contact his zanpakutou. Once entering his inner world, he meets the spirit of his bankai, Tensa Zangetsu, who refuses to cooperate with him and pulls out the "source of his despair", which turns out to be Ichigo's inner hollow. Meanwhile, in the real Karakura Town, Keigo Asano and Tatsuki Arisawa both wake up and wander through the town, pondering what has happened to them. Aizen finds and confronts Arisawa, paralyzing her with his spiritual pressure, while Gin lets Keigo run away.