Boku no Hero Academia 5th Season

Synopsis

Elsewhere, All For One oddly senses his brother, while All Might is concerned when Gran Torino says a previous holder of One For All told Shimura “the time has not yet come”. Enacting his clever trap, Monoma declares Bakugo at fault for All Might’s end, causing Midoriya to attack in anger. Black tendrils suddenly sprout from Midoriya's arm, rampaging through Field Gamma. Believing that heroes need protecting as well, Uraraka restrains Midoriya while Shinso uses his quirk to brainwash him. The tendrils subside and Midoriya awakes in the vestige world, meeting a previous holder. The tendrils are the man's original quirk, Blackwhip, which manifested in response to Midoriya's intent to capture Monoma. The man explains that the core of One For All has grown so large, the quirks of the previous holders are manifesting within Midoriya. Regaining consciousness, Midoriya and Uraraka go on the defense as Match 5 turns into an all out brawl.

(Source: Wikipedia)