幼馴染は何故か俺の顔を隠したがる

The main character, Haruto Saito, a sophomore in high school, is known to the public as a loner. He has known his childhood friend Kaori Nishijo for more than ten years.

My childhood friend has always wanted to hide my face. My hair was basically left long, and because we were together 24/7, I didn’t have many friends.

In this world where polygamy is allowed, the battle continues between those around Haruto who gradually begin to notice his charms and his childhood friend who tries to keep it hidden.