If you’re a Sonic the Hedgehog fan, you’d probably be familiar with Yuji Naka, the man who created Sonic and its universe.

Although Naka has left SEGA for Square Enix last year, his work at SEGA is still a very important milestone in his life. That is why today Yuji Naka brought two of his children to the former SEGA headquarters in Tokyo, Japan:

When Naka was there, he told his children that the seventh floor of the building was where he created Sonic.

They took plenty of photos before leaving the place.

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