I, nicknamed Fatty, am a fat and pretty girl. But she fell in love with that tall, handsome, rich young man. I knew clearly that he liked the skinny little girl, but I still pretended to be her best friend and the most coquettish sister without hesitation... Because I knew that this was the only way I could stay by his side and look after him. Until yesterday, the situation was like this and it had not changed. Who knew that when I woke up early in the morning, I would become the girl in his heart! Where did that young lady go? Where have I been?