Three Kids, The Mysterious Magic Book, & The Gemstones

The story centers on Miharu Asaha, Routa Igarashi, And Sakura Kinomoto, Elementary school student who discovers magical powers after Sakura accidentally freeing a set of magical cards into the world, While the two boys meet and discover they have matching gemstones which makes Miharu's Dog Plushy come to life and the two boys and girl meet three strange plushy looking creatures. As they work together as a trio to retrieve the cards and prevent a catastrophe.