Asano Teruoshi, a delinquent who lost his father when he was young, was told when he graduated from junior high school that he was actually the illegitimate son of an Italian plutocrat! From then on, he fell into a lot of training and education to train himself to be a qualified heir. Although he restrained himself a lot as usual, his true nature was hard to change, and he never improved in English and Italian... Finally, in his second year of high school, the killer was sent out - could that arrogant mixed-race boy who was so gorgeous and incomprehensible be able to be Hui Yue's tutor? He seems to have quite a good background... It's not certain who will tune and teach whom!