You're a washed-up card game prodigy who suddenly gets handed a device that turns your strategy obsession into literal AI waifus you have to keep alive in combat. The show knows the gap between "I love this card" and "I need to protect this person" is where everything breaks, and it doesn't waste time pretending they're not the same thing for Uzume. By episode three you're invested in whether these dolls survive their next battle, not because the writing is subtle but because the show commits completely to the absurdity of loving something that was built to be loved.
Uno Uzume used to dominate competitive card tournaments until she stepped away from the spotlight. That changes when a mysterious device lands in her hands, capable of summoning Fantasista Dolls: artificial intelligences housed in combat-ready female bodies, each one pulled from the card deck she wields. What starts as curiosity becomes her new reality as Uzume discovers she's pulled into a shadow war between card masters. These players hunt her down one after another, each battle a chance for them to claim a single wish granted by the victorious doll system. Uzume doesn't want to fight. She'd rather spend time getting to know her dolls as actual companions instead of weapons. But refusing the challenges isn't an option when others are desperate enough to keep coming. She has to find a way to balance the bonds forming between her and her summoned partners with the escalating danger surrounding them.