REPLICA DATTE, KOI WO SURU VOL.1-13 END

STORY : 

When she doesn't feel well, when there's a test, when she doesn't want to go to school... I take her place. I'm her replica. I'm not meant for anything else. But that changed when I fell in love. I wear my hair up so the boy I fell for knows it's me. We skip school and promise to meet again tomorrow, and every day after. I'm her replica. Everything about me is borrowed and empty, but my heart is mine.

有一名作为爱川素直的替身，为了不引人注目而在日常中默默度日的“复制品”——小直。当素直不想去上学的时候，就由小直代替她去学校。不管是努力读书、努力运动，一切都是为了帮助身为“本尊”的素直。
然而——直到某一天，小直坠入了爱河。仅仅只是这样，小直的日常就变得鲜明起来。制服约会，秘密的约定，只属于两人的特别时光。越是祈求“要是就这样持续下去就好了……”就越有更多无法坦率说出口的事。而素直也逐渐察觉到小直的改变，开始感到焦躁不安。
这是在滨海的小镇上所展开的——甜蜜又带点不可思议的青春恋爱故事。