Ryūgū Rena (竜宮 レナ) is one of the main characters in the Higurashi no Naku Koro ni series who acts as the protagonist of Tsumihoroboshi-hen and the antagonist of Tsukiotoshi-hen, Onikakushi-hen, and Onidamashi-hen. Rena is a signature character as she is featured more than once during the first anime season-opening, as well as appearing on most of the album and game covers. She appears in much of Higurashi's official art and even serves as something of a mascot for 07th Expansion.