Some viewers speculate Tomura Shigaraki's brush with death in the Jakku Hospital to be his first turning point. In that arc, ...

Deku was able to damage Tomura, and En was transferred ... It appears that Shigaraki is starting to grow hands all around himself, and these hands are what protect him from harm.

A small change that does help to give the series a better sense of finality is how author Kohei Horikoshi gives Tomura Shigaraki a smile in chapter 423 as he tells Izuku "Deku" Midoriya to do his ...