Kouryu Sasasaya inherited his late father’s dental clinic, becoming a young director burdened with great responsibility. Serious and dedicated, he often finds himself on the verge of collapsing under the pressure of his work. In those moments, the one who is always by his side is Shouma Kunitake, his childhood best friend, now a skilled dental technician.

Lately, Kouryu has started to fall asleep without realizing it, lulled by the sounds of Kunitake’s workshop. What he doesn’t know yet… is that the way Kunitake looks at him is far too affectionate to be just that of a friend.