Yoshitoo-sama!

A poor boy (with no family) who goes to a rich school gets attacked by ninjas but is protected by his sudden & unwanted guardian. It turns out he is the heir to a rich father who wants to make up for leaving him, however the rest of the family wants this new heir dead!! Assassins of all kinds show up to eliminate Yoshitoo, who only wants a normal life and doesn't want any money or his father. But weird things just keep happening to him.