Inaho is the sister of Azuma, the main character of Yakitate!! Japan. Aside from being the person who first introduces Kazuma to the wonders of bread, she is also known for being a very fast (and reckless) motorbike rider. She wishes for Kazuma to become a successful baker, and would do all in her power to assist him in this endeavor.

Kazuma Azuma wants to make bread. Not just any kind of bread, though. He wants to make a bread that represents Japan itself and can stand toe-to-toe with rice as a national food. Thanks to his legendary "Hands of the Sun," unnaturally warm hands that allow dough to ferment faster, Kazuma's bread is like a slice of Heaven. 
 
And when the Pantasia Rookie Competition arrives, everyone will get a taste of his skill! Along with his friend Kawachi (who's only in it for the dough), he’ll go up against koala karate masters, Harvard bread scientists, samurai with rolling-pin swords, and more! Can Kazuma create bread like naan other and bake his way to glory, or should he quit before he's toast? 
 
(Source: Right Stuf)

Azuma Kazuma isn't terribly clever, but he's got a good heart and great skill - at baking. Since childhood, he's been on a quest to create the perfect bread to represent Japan internationally. Now, he seeks to enter the famous bakery Pantasia, in hopes of reaching his goal. But plots abound... 
(Source: Anime News Network)

Inaho Azuma