自立を目指してバイトする、普通男子な主人公・兼多航の前に突如現れた美少女転校生３人。その彼女達から突然【３人連続でキス】された航！驚く間もなく発せられた彼女達の言葉、それは…『私達、あなたの許嫁です』！！　それってホント！？

Kaneda Wataru tries to be less of a burden to his busily working mother and takes on lots of part-time programming jobs. During times like these, on Wataru’s first day in his 2nd year of high school, three girls suddenly appear, kiss him and claim that one of them will have to become his future fiancée…