[vladimir998]

I don’t think “disturb” is the right word. “Tension” is usually the word used when discussing the build up before catharsis.

Merriam Webster

2

a: purification or purgation of the emotions (as pity and fear) primarily through art

b: a purification or purgation that brings about spiritual renewal or release from tension

[Borges]

Tension can disturb! And even apart from that abstract definition, you can see how an examination of evil in say Dostoevsky would be disturbing in illuminating way.

[what's up]

I don’t think “disturb” is the right word.

I don't think so either. According to Borges' definition a piece of art that brings calm to the soul would be termed "disturbing".

I think there's a better word.