Saishuheiki Kanojo - If you couldn't get enough of the anime, read the manga!
Ai-Ren! - One of the unpopular but really good written manga, make sure to get this.
Please Save My Earth - GOOOOOOOD!
Emma - Another one of the awesome romance anime.
Koi Kaze - Same as Saishuheiki Kanojo! It's a great written manga!