*throughout the kingdom all the nobles get magic power but there are several levels, namely levels jipsu, ryusu, chisu, hwansu, hwansu is the strongest level of magic, it can change water into fire or anything it can do, even the transfer of souls but here is Prince Jungwon, he can't get magic because his power wave is sealed inside, no magician has managed to open the seal.. he is frustrated and annoyed when all his brothers and friends have studied magic while he only knows magic tutorials, can't practice...

until he found you, a beautiful former assassin girl, with hwansu magic level and you are a junior.. since he met you he started bothering you every day and following you, "please, teach me! open my energy waves, come on, please!?" he said, whining as always.