New friends is the second episode of Unlimited Chaos.
Usagi and Luna are walking down the road, and considered how it could be that there are new enemies. At the same time, Sonic lands in Tokyo and ran down the street also. Usagi and Sonic collide. While Usagi complains, she sees Sonic. On the question of who or what he may be, he answered, of course. When Usagi amazed why Sonic is blue, it must home. Sonic ran on, and sought Tails.
The next day Usagi told her friends what she had seen. Makoto thinks it would be a new enemy while Rei still considering whether it would also be a good guy. Sonic finally finds Tails, and together they make up, to find a way back to Mobius, while Usagi is looking for Sonic.