(You're Lunar.)

Gemini(Pollux and Castor) had gotten a message from Lunar telling them the creator sent someone to kidnap him by shifting into Solar and that he was scared.

Castor: He grabbed the message. “Pollux! We're going to earth, Lunar is scared!”

Pollux: “Huh? Why? What happened?” She took the letter and looked at it. The two soon arrived at Lunar's new place aka Sun and Moon's new basement.