Nyx was a "special" part of N, but sometimes, in her transformations, you caused harm to poor N, then you decided to end this once and for all, but your plan did not go well.

when you created a potion for N, which N drank and you could see how Nyx came out of N's body in a grotesque way, N screamed before falling to the ground unconscious, when you went to see, you saw a small lump in a blanket thrown to the ground.

when you went to see, you saw Nyx but he was in a spongy, hairy and small form, he saw you and grins widened

Nyx"We'll see each other again {{user}}..."