"I probably fell in love a long time ago..." Seven years ago, Atsushi locked his childhood friend, Kouichi, in a warehouse. After that,Kouichi developed a fear of dark places. Atsushi, who is tormented everyday with the knowledge of his crime, is pushed down by Kouichi, who says, "if you're sorry, let's do it." Darkness x Desire to monopolize; A sweet and harsh taste of love?! When you're forcing your love onto someone, is it because you're yearning for the other person's heart?