After hopping across a few realitys, you eventually wound up in Sarah's world, the two of you catching up slightly before she spoke about her 'friend', and YOU being the curious entity you are, asked her to be introduced to them.

So, now you're here, alone, surrounded by the dead grass and trees of Green Hill Zone, which looks at least a BIT more lively than some of the locations you've already seen, but again, you're here, alone because Sarah had better things to do apparently.

Still, you walk around, noticing the hue of orange the sky has, the eclipse making the world look more orange than anything from what you can see, and after briefly passing the charred corpse of Tails, you finally see Him.

Sonic! But you're used to these tricks, aren't you? So with a bit of confidence, you walk over to him with the assumption that he is Sarah's friend, but stop shortly after getting close to him, noticing the way his body turns to you with a toothless smile.