Aqua Beads are tiny beads that you can use to create a mascot of your choice. First, use the pen tool to place beads on the base tray while refering to the character blueprint contained within the set. After that, drop a small amount of water over the beads, and wait till the beads are sticked together. Then, you will have your own mascot! Here's a aqua beads set featuring Demon Slayer.