A new teacher is hired to replace a mousy predecessor at an all-boys private academy that was once a co-ed public school. However, she uses her new job to investigate the death of her great-grandfather, Kuroda Ryuichiro, and to give her mother, Kumiko Yamaguchi, some closure. But is working at this profound school worth exposing her family secret?

The smart, good looking Choi Young Do is Jeguk High's biggest fear, he get's what he wants no matter the price and then there is small, outspoken Park Su Jin who has no fear. Did Choi Young Do finally meet his match? Choi Young Do and OC

Hyuga Aya was expelled from her previous school, much for her surprise she's ends up in an all-boys' school – Shirokin Gakuen. Of course, she should've known that the boys would be curious to know the real reason as of why and how she's ended up in an all-boys' school. Shin X OC

Has anyone ever wondered what would happen if Young-do met someone else before Eun-sang his first and only love, who disappeared for more than 10 years? How would Young-do react if she came back into his life?

Shirokin Gakuen has become a coed school the same year that Yamaguchi arrives, and the new girls shake things up in a far different way than the boys originally expected them to... Rated T for violence/swearing and things to come in future chapters.