About
The E=mc² is the signature of Hiro Irifune, known in the community as “Roan,” and the companion piece to Tatsuya Fujisaka’s Blink in the “Tatsuya vs. Roan” series. Where the Blink added a lip to the Stardust formula, the E=mc² went in the opposite direction — flat sides, a rounded outer shape, and a low edge, with 69g of weight for strong spin momentum. The E=mc² +2 followed with an additional 2g. Irifune would later develop the Tricklab responsive series for yoyorecreation.


