ATID-704 | I ended up crossing the line—behind my best friend’s back—with the girl he’s in love with. She’s someone I absolutely shouldn’t have feelings for, yet every time we meet, she keeps telling me, "I love you." Unable to bring myself to turn her down, I gave in. — Aya Kamiki

Atsushi is introduced by his best friend, Yuichi, to Aya—the woman Yuichi is in love with. To everyone’s surprise, however, Aya falls for Atsushi at first sight. Although she repeatedly expresses her sincere feelings to him, Atsushi suffers from a phobia of women, stemming from a painful heartbreak in his past. Upon learning the truth, Aya gently embraces him, promising to help him forget the past, and begins to thaw his frozen heart, layer by layer. Despite the guilt they feel toward their mutual friend, the two find themselves drawn to each other with intense, growing passion.