Mizuki Hotaru. A 16 year old girl to just transferred into a new school a week into the school year. She had just lost her older twin brother in a traffic accident. These days, her luck is just getting "better" and "better." She doesn't really know what to do with her life and is confused to where she should go.

The time period we are in, Mizuki had gone to school for more than four months. After school at Ouran, Mizuki is now wandering around the school aimlessly, looking out the windows and greeting other people along the way…but she has a huge secret she is keeping from the others…what is the secret? Well, that I won't tell you just yet… but if you know Haruhi's "dilemma," then you should know Mizuki's. Although… Mizuki's is a bit different…now, shall we start from the beginning?