Profile

Himei Shoutan is the titular star of Sailor Nothing by Twoflower aka Stefan Gogne. A magical girl given her powers as a child, the constant toll of being the only heroine fighting off waves of Yamiko has broken her. Beaten nearly daily, failing repeatedly to save every single person, always alone and friendless, Himei is deeply depressed and yet torn by her own desire to help people. When she tries to quit, she finds she still has the power to transform and an appropriately tattered outfit, and is stuck with the job.

Taken from the beginning of the series, so no spoilers.