Though I'd add in Ryusuke's younger sister.

Name: Kokoro Takahashi
Gender: Female
Age: 17

Looks:
[img=http://s2.favim.com/orig/37/anime-cute-girl-red-hair-strawberry-Favim.com-306509.jpg]
Kokoro is small in stature, being only about 5' 2" and coming in at just shy of 100 pounds. She has longish red hair and emerald green eyes. Her wardrobe various a lot, she will wear anything from jeans and tee-shirts, to mini skirts and blouses. Just depending on her mood. Though she does prefer the color red. She likes to keep her hair loose, but will put it in a pony tail when working.

Personality: Kokoro has a light, cheerful nature. There's almost nothing that can wipe that smile off her face. She's got a good head on her shoulders and already has plans for what she wants to do after she's done with school. She's incredibly stubborn, once she has her mind set, there's no stopping her. Surprisingly aggressive, she isn't afraid to get her hands dirty in order to get what she wants. She loves to cook, especially sweet things, and her goal is own her own cafe one day. She has a bit of a brother complex and tends to get jealous if he hangs out with girls other than her for long periods of time. But does not love him in a creepy incest way, she just gets overprotective of him sometimes. She's selfless and likes to make other people happy before she even considers worrying about herself.

Background: Kokoro was into a happy family with loving parents and an older brother. The two siblings instantly hit it off and there was no attempted murders between the two of them. Though she was only three years old when Ryusuke lost the sight in his eye, and she didn't understand what was going on, she still knew that her brother and her parents were upset and did her best to make them happy. She was old enough to understand three years later when her brother lost his eye. It was a bit scary seeing the eye patch, but she still smiled through the whole thing and kept her brother going. She started cooking when she was ten, mostly just stirring things for her mother. But as she got older she started doing more and more. Now she pretty much cooks all their meals. She has extra love for creating sweets though, seeing the happy faces of people when they eat what she creates makes her happy. Her dream is to open up a cafe when she's older and she's currently trying to convince her brother to work for her. Right now works in the kitchen at the same cafe Ryusuke works at.

Who Can Use Him/Her?
Mostly me, I'd like to have control over their sibling relationship. Though you can still use her.