Tachibana, an unremarkable college student who looks just as plain as he is, works as a bookstore clerk in charge of the girls' manga section. Shortly after starting his part-time job, he met a particularly striking customer, "Mr. First Love," who had a somewhat intimidating appearance. At first glance, he seemed like a scary person, but when he smiled, he was a cute person overflowing with love for girls' manga... Kanade was captivated by this contrast and before he knew it, he had fallen in love. However, even after six months of knowing him, he still doesn't know who he is. Kanade has been restraining herself from prying, thinking it's not right to pry, but he accidentally spots "Mr. First Love" in town! He can't help but follow him...!?