Bio: Koboshi is a childhood friend of Higuchi and seems to have a crush on him. She's a tomboy in some ways and is a very strong girl. Misha's behavior tends to annoy Koboshi. Partially because Koboshi is worried that Misha will take Higuchi away from her or injure him in the process. She also has a very competitive attitude.
Opinion: She's strong for one thing. Sure she can be mean in some ways, but she's never really mean for no reason. Also I like her mysterious ears on top of her head. They give her a bit of mystery. Seeing as they look to match her current age even in flashback pictures. Over all she is a kind and tough girl with a competitive nature. Truth be told she's my second favorite character in Pitaten behind Shia that is.