Suzu is a young lady whose sister is assisted by Kantarou in the first case on the first episode. She has a mad crush on Haruka, and regularly visits to see Haruka and tease Kantarou. She's also friends with Youko and Rosary. Though at first Rosary don't show much interest in her Suzu continuously tries and became friends with her.

Source: Absolute Anime. (beginning)