For her, love is as hard to come by as if it were made in Heaven. For him, love is asking oneself whether he could win you, stubbornly love to lose to you. Regarding the subject of their love, they took each other as samples, and learnt together how to love each other, uncovered the secrets of each other, and progressed together. But, one day. The twenty-seven-year-old him said to twenty-four-year-old her: “Do you want to wear a school uniform with me and go secretly to school to fill the vacancy of our first love?” Then, she slowly noticed something – he is a novice in love. Yet at the same time, he is also an extremely innate expert of love. In short, this is a light novel, also sometimes could be a sweet one.