Synchron Kowa Shohei Otani Grapefruit Flavor & Berry Flavor 6-Can Set Anonymous Delivery Synchron Kowa, born from the joint development of Shohei Otani and Kowa. From the ingredients to the flavors, this product is packed with Shohei Otani's dedication, and powerfully supports you as you continue to take on challenges. ⚠︎ Expiration Dates: Grapefruit Flavor: June 2026 x 4 Berry Flavor: July 2026 x 2 Please refrain from purchasing if you are concerned about minor details or seek perfection.