From Up Above

From Up Above (ある日空から突然に., Aru Hi Sora Kara Totsuzen ni) is a manga written and illustrated by Sakuya Kurekoshi. It is licensed in North America by Digital Manga Publishing, which released the manga through its imprint, Juné, on 25 November 2007.

Plot
Yuuto is an ordinary run-of-the-mill high school student. But one day he gets struck by lightning, and things start to take a turn. A strange person, who goes by the name "Yadzuchi," shows up and starts following Yuuto around. Yadzuchi turns out to be a ghost with mysterious spiritual powers, and proclaims (insists!) that Yuuto is the reincarnation of Princess Aki from a thousand years ago. Now, Yadzuchi won't leave Yuuto alone until he remembers who he really is!