This is Hanasu, a 12-year-old friend and traveling companion to Lumina.
"Hanasu" ( はなす) is the Japanese verb for "to speak." As for appearance, she is a very thin (underweight) and rather short. She has thick, dark brown hair and yellow eyes. She has a mole to the left of her chin. She often wears "old clothing" (vintage).
In this picture, she is wearing her school uniform.
She's from Ecruteak City, favors Normal-type pokemon, and wants to be a Kimono Girl. She is quiet, has low self esteem, and is a bit cynical due to being severely bullied in school. Her father is a historian and travels to foreign regions often. Her mother was a Kimono Girl before being injured.
Hanasu loves to sing.