Rain is a noble that hails from an unnamed low-ranking household. She serves as a teacher and retainer for Princess Iris of the Kingdom of Belzerg. Rain is depicted as a straight man character with a relatively high amount of common sense. She has been described as more approachable then other nobles, and as a diplomatic liaison for her partner Claire. She is also very intelligent, serving as a royal tutor who instructs Iris on subjects like history. Because Rain came from a lower-ranking noble family, she is very insecure of her wealth. Possibly because of this fact, she does not carry herself pompously as other nobles might; compared to them, Rain is very humble when it comes to her status. She has been seen apologizing to commoners for the strange behavior of her comrades of higher-standing. Rain has an inferiority complex due to her lower status, considering herself to be plain and unmemorable. She believes that Kazuma shouldn't have to use honorifics when referring to her despite her being a noble and him being a commoner. Because of her poor status Rain is easily manipulated by the allure of fame and fortune.