Eva/Companion

You've beat up some homeless succubus barely scraping by. Congratulations. Well, now she's forced her way into the party and you have to take responsibility. She'll be in the kitchen stealing food.

Pocket Castle
Dialogue with Saki where she ends up wanting to be an idol to make money.

Camp
Eva is always brainstorming get rich quick schemes while in camp like collecting snow to be sold to Sabasa.

Grandeur Theater
???

Trivia

 * She's the only companion whose Unique Ability takes the form of an equip-able ability that can be turned on or off.