Rin hates Len and his playboy attitude, Len loves Rin and her tsundere-ness. Both decided to play a game with each other. Who shall win in The Game Of Love?

Rin spends all her time writing stories in her little, yellow notebook. One day, one of her old "friends" Len tries to steal her notebook, to impress his friends. However this results in a terrible accident, one that Rin might not survive. When Len visits Rin in the hospital, he reads her stories from her notebook, and learns some of Rin's hidden secrets.