Kirika Kure

Kirika is a rather eccentric, rash girl who is incredibly dedicated to Oriko Mikuni. When it comes to Oriko, Kirika is willing to do anything she asks of, even killing magical girls, or becoming a witch to help her gain an edge in battle. Kirika is kind to Oriko, and often acts similar to a puppy dog in her presence.

To people other than Oriko, Kirika tends to be quieter and even moody. She also has bouts of childishness, such as commenting on how hungry and bored she is when in the middle of fighting with Mami Tomoe. Kirika is also somewhat unstable at times, occasionally laughing madly. She is also very touchy and serious on the subject of love, claiming that people who use terms like "crush" don't understand what "true" love is. Additionally, she hates being called a child, unless the person in question is her dear Oriko.

In the past, before she met Oriko, Kirika was antisocial and quiet, even timid. She looked down on others as a way of making her feel better about herself. Kirika, however, was awed by Oriko when the girl helped her once. Kirika then became attached to Oriko, wanting to get to know her, but was afraid that Oriko wouldn't remember her, since no one would remember "someone like [Kirika]". So Kirika made her wish to "become a different [Kirika]", leading to her gaining her current personality.

(Source: The Puella Magi Wikia, edited)