A direct sequel of Oujisama Game.
1) King Game -
The 2nd prince, Renge, of our favorite royal family is sent to a neighboring country as collateral in a foreign relations deal. When things turn sour between their countries, he becomes a virtual hostage of a tyrant King, Ouga.
2) King Game: 6th Prince vs 3rd Prince -
Homura, 3rd prince, fell in love in his brother, 6th prince, Airi, when they were kids. Younger prince was very sickly at that time and his brother started to learn medicine (with poor results) in order to heal him. Now they are grown up, they are lovers (by name only) and Airi is bigger and no longer sick or weak, but not in Homura eyes. 6th prince decided to change that.
3) Spin-off: Kaizoku Game (5th Prince vs. Pirate)
The 5th prince always wanted to see the world, but this isn't possible when he is smothered by his guards. One day he managed to run away, only to be captured heart and body by a handsome pirate.....
Ousama Game (TAKAGI Ryo)