Princess Lover!

Kobayashi Teppei lives a normal life with his parents until the are tragically robbed and murdered in a car wreck. Afterwards he finds out that his mother is the heiress to the vast Arima empire. On his way to meet his grandfather and become the new heir to the Arima fortunes, Teppei sees Princess Charlotte Hazelrink falling prey to a bunch of highway robbers. After rescuing her, he must now find a way to fit in with the rich and powerful as Arima Teppei, heir to his grandfather's riches.