Protect Me, Heavenly Moon Guardian!

Mamotte Shugogetten! (まもって守護月天!) is a Japanese manga by Minene Sakurano which was serialized in the monthly magazine Shōnen GanGan from 1997 to 2000. A continuation was published in Comic Blade titled '''Mamotte Shugogetten! Retrouvailles''' (まもって守護月天! 再逢) from 2002 to 2005. The manga was adapted into a 22-episode anime television series produced by Toei Animation which aired from 1998 throughout 1999. An eight-episode OVA series, Denshin Mamotte Shugogetten was released in 2000.

Plot
14-year-old Shichiri Tasuke lives a lonely and ordinary junior high school life. His family travels all the world over, while only occasionally sending letters and postcards.

This lonely and uneventful life is shaken up the day Tasuke receives the magical Shitenrin ring from his father in China. From out of this ring appears Shao Lin, the Guardian Angel Getten. She proclaims that she is here to protect her new master from all forms of danger and will stay by his side forever.

But having been locked in the Shitenrin for centuries, Shao knows nothing on the modern world thus causing trouble more than help causes. Now, Tasuke must learn how to handle this beautiful, naive and magical angel.