Cerberus Jam
I think this could have used a lot of development. However, for as short as it is it's pretty good. Although I do think with a bit more chapters it could have been great.
Shinigami Hime No Saikon
I actually really enjoyed reading this. Alicia Faitlin, the main character, is an unusual girl but her strange personality makes this story even better. This "Princess of Death" is a perfect match for the "Tyrant"
RECOMMENDED
Usotsuki Engage
Mayonaka Lolita
My Fair Neighbor
The Thief and the Jewel Girl
Fated To Love You
Gakuen Alice
I actually watched the anime for this long before I started even reading manga. So when someone suggested I read this I jumped at the chance. The amine for this was great but the manga went so much farther into the story. This is definitely a favorite of mine and a must read for EVERYONE.
HIGHLY RECOMMENDED!
Bouquets of Flowers for the Sleepless Knight