Spoiled Boy VS Elemantry School Girl

"Shut up, elemantry school girl! "

"What did you say spoiled boy?!! "

"Looks like they are starting it again "

Kagami Hikari,a girl with red hair and how should I say...... Short she is a short person. Her height is just 144 cm and she is a high school girl actually.

Fujioko Yuki, a boy with sky blue hair. He is a son of rich family.A high school boy.

The two person that always fight like cats and dogs when they met. But they also have same problem. Family problem. How do they solve their trouble? Read this book to answer the question.

P/s:Please forgive me if there are wrong spelling or grammar