Her name means "March". (The Mutsuki-class as a whole are named after moons or months.)
Third of the Mutsuki-class destroyers. She has purple hair that is longer in the front than the back, and like all the Mutsuki-class destroyers, has a black serafuku. Her short shirt shows off her midriff frequently. Also like the rest of the Mutsuki-class, she wears a crescent moon emblem, which she wears on the left side of her hair, but is distinct from Nagatsuki only by the direction the moon faces. (Crescent pointing away from her face.) On her rigging is a white plum blossom.
Historically sunk by air attack on September 11, 1942, off New Guinea.
She frequently has a sour face and a deadpan regard for what's going on around her.
She's not Patchouli Knowledge, mukyu.
Also not Yuzuki Yukari.