Working at a vintage cafe was Yuka's pride and joy. It also was how she met Kyo. In fact, Yuka began to eagerly anticipate him walking in at his usual time each day... until her father's crippling debt came to light, that is. The resulting whirlwind turned her life upside down, and Kyo was at the center of it. However, this Kyo seemed completely different from the strong, silent man she knew from the cafe. What's more, he had underlings who called him "sir" and "boss"... Was Kyo a yakuza all along? Was that kind smile just a mask? Who is the real him...?