Muku and Mizuki meet on a trip to Nagasaki. Muku, a university student, is in the middle of a trip to recover from his heartbreak over his uncle. Mizuki, who is twelve years his senior, is in Nagasaki to see his stepson by his ex-wife, Hiroto. Muku hopes to fill the empty place in his heart. Mizuki is hoping to overcome his forbidden feelings toward Hiroto. At the beginning, both are only trying to fill the hole in their hearts, but fate gives them the chance to meet again, and each time they make love, it becomes harder to part. However, the extremely captivating and beautiful young man, Hiroto’s existence interferes with both of their hearts!? Will these noisy hearts be purified, in this high resolution, adult love!!