Ever since All for One expressed the desire to steal Star and Stripe’s quirk, we knew it was going to be something out of the ordinary.
As it turns out, New Order is bonkers. This quirk allows Star and Stripe to change the properties of anything she is touching. She does this by making physical contact, calling out the target’s name, and assigning a rule to it.
While this may seem unbeatable at first, there are certain limitations to New Order, as pointed out by Shigaraki in chapter 331.
Her quirk grants her almost infinite freedom when it comes to non-living things, but she is limited with her rules when it comes to the living. For example, she can’t give herself infinite strength or just touch a target and command it to die.
Also, the quirk’s manifestation is limited by Star and Stripe’s understanding of the target’s name. That’s why Shigaraki’s heart didn’t stop in the last chapter, because even his understanding of self was hazy, making Star and Stripe’s interpretation of him as Shigaraki Tomura incorrect.
Although these are the only limitations recognized by Shigaraki, there might be a few that we aren’t aware of yet. On the other side, there might be other hidden strengths as well.
It seems like her two rule limit might be bogus, or at least breakable under certain conditions.
She seems to be using the two rules to deliver the Keraunos attack while standing on the aircraft. Maybe rules imposed on her own body can coexist with other ones for a short time, making it seem like there are three rules in play simultaneously.
All for One stated how if he could get this quirk, the war would just be a formality. Well, it is easy to see why.
About My Hero Academia
My Hero Academia is a Japanese superhero manga series written and illustrated by Kōhei Horikoshi. It has been serialized in Weekly Shōnen Jump since July 2014, with its chapters additionally collected in 24 tankōbon volumes as of August 2019.
It follows a quirkless boy Izuku Midoriya and how he backed the greatest Hero alive. Midoriya, a boy who has been admiring heroes and their ventures since the day he was born, came into this world without a quirk.
On one fateful day, he meets All Might the greatest Hero of all time and discovers that he was quirkless as well. With his diligent attitude and unwavering spirit about being a hero, Midoriya manages to impress All Might. He is chosen to be the heir to the power of One for All.
Source: My Hero Academia Chapter 331