Mikan Kurenai

Mikan Kurenai is an orphaned girl who comes from a family of balloon makers. Despite her young age, she is a master balloon artist, being able to construct balloons of all shapes and sizes. After her parents were killed by Tenma Ganzo's senshi, she was rescued by Touka Kurenai, and accepted her offer to join Touka and the other dispossessed girls of her village. Since then she has worked for Touka at the Peach Blossom Tower while nursing dreams of revenge. After Rushuna helps her see beyond revenge, she is unable to kill Ganzo when she has the chance. Mikan then leaves Touka Kurenai and joins Rushuna and Yajirou on their journey, to "keep an eye on them."

(Source: Wikipedia)