When her eyes turn red, just run. (Patreon)

Do not forget, She has Berserker Attributes.

Yep~It's not a joke.

This is a true setting about her.

It does not appear in the game.

But does not mean that it does not exist.

You will find this setting in the game.

For example, Retsu feared Aya.

But throughout the game, 

You can't see any place where  Aya  is stronger than  Retsu.