"I like you!"

When a 14 year old girl that is in second year high schooler gets confessed to by her classmate. They were classmates since middle school, Aino Isumi, the heroine of the story is just a normal person, she lacks knowledge but has skills. She learned karate and judo when she was young. Satou Miyura, the one that confessed to Aino was a quiet but cheerful person. He liked Aino from the moment he met her, on the day he confesses, Aino just mysteriously disappeared! She transferred school and moved to another house because of her parents' jobs, she didn't get to say goodbye because it was top sudden. 2 years has passed, she was 16 and already in the 5th year of high school. She went back to Tokyo where she spent her 14 years and went to the same school again. No one recognized her because she was totally different! but her attitude was still the same, she became prettier and smarter than before. She met Satou again, they became friends. Then, he confesses once again! What will next?