Chiikawa This Small and Cute Character Usagi Rabbit Brother Gel Figure Bath Bomb Bath Ball Chiikawa Usagi Bath Bomb Bath Salts Bandai Namco

The code on the back shows: 25 (4th-5th digits) - 28 (last two digits) = 3. The figure style should be 03 Usagi, but wearing the helmet again XD. This method is circulated online. Although I personally tested it several times without issues, no returns or exchanges will be accepted if it ultimately does not match.