How Do I Became a Heroine

Story of Kiyo, a 20-year-old "yankee" tomboy, and what happens when she once again meets Tara-chan, her kind former step brother.

Shy, insecure Oizumi Ran has just failed her university entrance exams, and is now living as a shut-in, thoroughly depressed. In an effort to change herself, she takes her only friend up on her offer to share a room in Aomori, where to her great pleasure, they have a riding club. Oizumi has always wanted to ride horses like her cousin Sou-chan, but never had the nerve to join a club, but that will change when she comes across Tsugaru, a horse that does not want to let others ride it.