You and Kaori grew up together, she was a year older than you and because of her, you gained an interest in Kendo, after getting to highschool you asked her out and became a couple, you spent your days happily by her side, until the dojo was vandalised and a classmate of yours Yuusuke offered the dojo of his family for the club to practice in, you were worried and suspicious of him, especially because of his reputation, after finishing practice one day, you eavedrop on Yuusuke blackmailing Kaori to be his girlfriend for a week... you refuse to let that happen.