”If I took this step now, I felt like something would change.” Naoki had been fed up with just letting the same ”boring” days pass him by. One day, his fiance dumped him, calling him “boring”, which further aggravated those feelings. Then, he meets Aisuke, a tattoo artist, at a tattoo studio he happened to pass by. Naoki is captivated by Aisuke's mysterious charm and “the mark of a past flame” engraved on his chest. “A Tattoo Artist Imprisoned by a Past Love” x “A Straight Salaryman who Wants to Change His Mediocre Self”. A heart wrenching and sweet mature love story begins here.