Fujita Maki

Taken from Serenus-Dreamers: Admitting herself as super unlucky person, Ritsu, freshman in high school, tries to get out of unluckiness and disasters by living in the school dorms and starting fresh. However, with her destined meeting with school's famous genius as well as problematic student Eiri, Ritsu starts to get unluckier everyday....!?

From Tokyopop: When Kazura Enomoto’s grandfather dies, he leaves her to the son of a rich family, Mizuki Magahara, as payment for his debts. After she goes to live with him, Kazura learns that she’s not going to be working off the debts as a servant—she’s going to be Mizuki’s fiancée! Unless Kazura can repay her debt, she’s got no choice but to learn to live with her new lot…