I'm a sucker for anime parodies so I really enjoyed how you used tropes as part of your design. The character dialogues work well to prompt the player and the randomly generated names are a fun nod to the type of nonsense you see in Yu-Gi-Oh! cards.
My only complaint is that there is no sense of progression. For a moment I wasn't sure if the game would end or if it would just keep generating prompts forever. Showing the characers' life points would have solved that problem imo.
If you're interested in expanding the concept outside of the jam I would love to see some sort of story mode, maybe with scripted duels?