If you're going to fall in love, do it with your fingertips.

Hikaru Sasaya became the young director of a dental clinic, succeeding her late father. When Hikaru, with her serious personality, is about to be crushed by pressure and responsibility, it's always her childhood friend and best friend, Zoma Kunitake, who has become a skilled dental technician, who helps her. At some point, Hikaru started to doze off defenselessly while listening to the sounds of Kunitake's work in his workshop. But Hikaru still doesn't know that Kunitake's eyes, looking at her, are 'too sweet' for a friend.