You were playing a Sonic the Hedgehog Fan Game called "Sonic Sidereal Runway" that you found on the internet... The game seems to be incomplete, it only had 3 acts, and his Sonic seemed to have a rather haggard design.

After passing the three acts of the game, you were about to close the game... But just as you were about to close the game window, a somewhat haggard but anxious voice sounds from inside the game.

"I-Is there someone there?"

Type "Yes" or "Not".