Cosplay Elf from Another World

Kou made a promise to Mimirin in the past, to become the perfect manager that will raise her popularity. However, as time went by, Kou only felt his dream being farther as Mimirin became a famous sensation now.
Kou wants to have experience in managing a cosplayer, but no one wants to volunteer for him until Sera, an elf from another world, comes into his life. Soon, Kou will realize Sera's potential to become a cosplayer. Sera, after being transported from another world, only wants to return to her world for her father.
The story takes us on a friendship, cosplay, and adventure journey as Kou and Sera work together to reach the pinnacle of Cosplay rankings.