In order to continue his high school education, Asaoka Miki separates from the person who raised him and returns to his parents' home. Since he has always been compared to his talented and social younger twin, Itsuki, he has a deep inferiority complex towards his twin brother. After meeting and falling in love with Takagi Kazuya, someone who is seven years older than him, Miki's world changed completely. Takagi's love and kindness melts Miki's stubborn heart, and not too long after, Miki's blind faith in Takagi intensifies. For Miki, that was his first once-in-a-lifetime love he's ever experienced.
However, the person Takagi's after isn't Miki, but the boy who harshly rejected him. With Miki, Itsuki's lookalike and replacement, in his hands, will Takagi suddenly close in on Itsuki again....?

A love story between a piece of scum and a brave young man who are a few years apart.
高校進学を機に育ての親の元を離れ、生家に戻った『浅岡幹』。
多才で社交的な双子の弟・樹と常に比較され、根深い劣等感を抱えていたが、七つ年上の喬木一矢との出会いと恋とが、幹の世界を一変させた。
喬木の愛情と優しさは幹の頑なな心を溶かし、やがて幹は盲目なまでに喬木への信頼を深めていく。
幹にとってそれは、生まれて初めての、一生に一度の恋だった。
だが喬木の思惑は幹ではなく、かつて彼を手酷く振った少年、樹の上にあり同じ姿の幹を手に入れた今、喬木はまた樹にも急接近してゆき――?

ゲス男×健気男子の歳の差ラブストーリー