Renny (also spelled Lenny) is the daughter of the family managing an inn within the Kingdom of Tils. This inn serves as the operational base for the adventuring party known as the Crimson Vow, where Renny also resides.

Physically, Renny presents as a petite young girl. She has tawny brown hair arranged in double braids secured with yellow ribbons and distinctive lapis lazuli-colored eyes. Her typical attire includes a white head bandana, a green dress, and a white apron.

Despite her youth, Renny exhibits a notably strong business sense and shrewdness in managing the inn's operations. This practical acumen positions her as the primary individual effectively running the establishment. She maintains a good friendship with the Crimson Vow members, who are regular guests at her family's inn.