What does Ango Sakaguchi's ability "Discourse on Decadence" do?


In _Bungou Stray Dogs_ , Ango Sakaguchi's ability is "Discourse on Decadence".

I googled and looked at the wikis, but there's no information about it.

What does it do?




It was revealed in the manga that

> Ango's ability is to read memories that are left in things, basically a
> memory extraction ability.

