For those wondering, they’re basically bead-filled soft ball toys.
Ensky Hobby are releasing six steamed bun nigi nigi mascots for Yu-Gi-Oh! and Yu-Gi-Oh! GO RUSH!! Each bundle costs ¥3960/$27.36 USD. The images list a blind single option for ¥660/$4.56 USD, but only the full six as a bundle are available for preorder. Shipping is expected in December 2022.
Yu-Gi-Oh! characters: Yami Yugi, Yugi Muto, Seto Kaiba, Joey Wheeler/Katsuya Jonouchi, Yami Bakura and Yami Marik.
Yu-Gi-Oh! GO RUSH!! characters: Yudias Velgear (alien and human forms), Zuwijo zir Velgear, Yuhi Ohdo, Yuamu Ohdo and Manabu Sogetsu.