There are a couple of old manga and anime that I read/watched a long time ago, but I can't remember the names, so I decided to post here for help (:

The manga is about romance between childhood friends. There was a girl with short, black hair and two twin brothers (one has black hair, one has light-color hair). I don't remember much about it, but I think the girl was in love with the older brother (the one with light-color hair), and the younger brother likes her, but he always teases her. In the end, the older brother likes her back, but she switched to the younger brother. The older brother was also involved in a motorbike accident, I think, and there was a scene at the airport. I read this manga a very long time ago (around 8-10 years ago), and I read it in my own language, so I'm not sure if it's been scanlated yet.

The anime I'm looking for is sort of sci-fi. There was a group of teenagers who got transported to another world/back in time (I don't remember which), and there were dinosaurs in that world. The princess of that world was in love with the guy who was the leader of the group. That's all I can remember 🙁

Any help would be greatly appreciated!