Hidden Past

Hisoka Morishita is in the 10th grade and she has been dreaming of a mysterious boy by the name of Arashi. It's been going on for 2 years. Then one day at school on a testing day, the teacher is taking attendance and calls a name of Arashi Ishikawa. They are stuck together on cleaning duty after school and everything starts to become a mystery between the two of them. And a love story starts to form on the mood of the story. Have they met before ? Or is there a mysterious history between the both of them.