Bleach Episode 307 English Subbed Episode Title:Emergency Situation! Aizen, New Evolution!.Episode Description:Some of Ichigo's classmates, Kanonji and even Kurumadani make various attempts to stop Aizen but they all fail. Then, Gin returns and tells Aizen that he eliminated Rangiku, and Aizen claims he will begin creating the Ōken after he kills Ichigo's friends. Gin then pulls a surprising move by grabbing Aizen's zanpakutō and then impaling him through the chest. Gin reveals that the true ability his bankai turns his zanpakutō to dust when it contracts and retracts, capable of leaving a lethal poison in one's body that dissolves it at a cellular rate. Aizen begins to perish as Gin escapes with the Hōgyoku in hand. However, the Hōgyoku, still belonging to Aizen whether or not it is inside him, evolves him to an even greater form as a result. Gin has a momentary flashback of when he first saw Aizen with Rangiku unconscious on the ground, which encouraged him to kill the former. In the present, the newly evolved Aizen teleports to Gin's location and brutally slashes him across the middle.