That night, Twilight had a peculiar dream. It was the first of its kind. It was like a lucid dream only for the life of her she couldn't control it. It wasn't until she heard a familiar voice that she began to put the pieces together.
"Princess Twilight Sparkle. You've made quite the discovery, haven't you?"
Twilight smiled and looked to the moon in her dream, watching as Princess Luna manifested herself from its calming light and lowered herself to speak on Twilights level.
"Princess Luna! This is a surprise. Oh, but you can't believe the adventure I've had and tomorrow it will only get better."
Luna smiled and nodded at her younger counterparts enthusiasm. "Yes. You were dreaming about it earlier. I know all about what has transpired."
Twilight sat down casually and continued to speak to the fellow princess. "Then… why are you here? Have I done something wrong?" Twilight frowned. She didn't know of any laws against what she was doing but all because she didn't know of them, didn't mean they didn't exist.
Luna laughed lightly to herself. "No, no, Princess Twilight, you are not in trouble of any kind. I merely wish to bring you a warning." The dark blue pony frowned and looked to the sky. "As numerous as there are stars in my beautiful night there are worlds out there beyond our comprehension. I will not stop you from exploring them but I ask you to err on the side of caution." She looked back to the younger princess. "Twilight, you know nothing of this world of which you are so fascinated by. And you know nothing of its inhabitants."
"Then you're asking me to stop seeing Gohan and to leave the world alone?"
Luna shook her head. "No. I'm only asking that you be careful and listen closely to your heart. Curiosity is a powerful trap that you fall into consistently. So long as we know nothing of this world, it is equal parts dangerous as it is enticing to look at. I will not tell my sister of your adventures, for I feel she would stop you, but still I ask once again, listen closely to your heart and let it guide you through this journey."
Twilight stood and lowered her head in a respectful bow. "Of course, Princess Luna. I will do my best to study the world with vigilance."
Luna nodded and flew above her. "Then I shall return you to your sleep. Farewell Twilight Sparkle."
Twilight nodded in return and returned to her dream about the other world, enjoying the mystery that surrounded it.