Mechamaru Gurren Lagann

Naoko after the death of her family lives with Kamui and Kaien.In the daytime she is just a student.In the night time she has a different role.

A mysterious vampire hunter makes his appearance.Can Naoko and Kaien solve the puzzle before it is too late?

Kamui and Kaien try to find Naoko who has being missing.Can they find her?