Neutron Prototype - the design was inspired from one of his signature yoyo designs, the L2. which is also the first hubstack Yo-Yo ever made.
Back then, nobody knew who was Takuto and there was no exposure/promotion done on the Yo-Yo.
He just brought his L2 to AP like a passionate yoyo player wanting to share his creations with others.
And the L2 sold out like hot cakes.
Now that, was Revolutionary