Nisedol: Shourai wo Chikatta Osananajimi ga Idol ni Natte Touku ni Icchatta node Ore mo Idol (Josou) ni Natte Oikakemasu!

Subaru moved to Tokyo in search of his childhood friend, with whom he had promised his future. However, before he knew it, she had become a top idol. Furthermore, for some reason, she doesn't remember Subaru, and it seems her past has been completely erased...? To uncover the truth, Subaru takes a friend's advice and decides to cross-dress, aiming to become an idol himself... A mysterious idol story!!