妹と一緒に見上げたお城のようなタワマン。たとえそこにお姫様が住んでいようと、俺たちとは関係のない存在…ではなかった！俺はこのお城に住む真堂礼とふとしたきっかけで出会い、そして知った。目の前にいる礼は、お姫様ではなく、学園のアイドルでもなく、ただの可愛い女の子なんだと――。ＷＥＢで人気の青春ストーリー、待望の漫画化！★原作小説、講談社ラノベ文庫より発売中！

My little sister and I looked up at a high-rise apartment building, touching the clouds like a castle would. Even if there was a princess living in there, it didn’t have anything to do with us, merely an unreachable existence—Or so we thought. With a meeting by pure chance, I ran into Shindou Rei, and realized. The Rei in front of me wasn’t a princess, or the untouchable idol at school, but just a cute girl you could find anywhere.