March 7th is an enthusiastic girl who was saved from eternal ice by the Astral Express Crew, and has the unique ability of being able to use "Six-Phased Ice." When she awoke, she knew nothing of herself or her past, and decided to name herself after the date of her rebirth, "March 7th." She takes many photos using her camera in hopes of discovering a memento from her past.

(Source: Honkai: Star Rail Wiki)