From Childhood

Touya and Keigo have known each other since kindergarten.
Keigo was a boy with blonde hair and the brightest smile in the room. He was very popular among the other kids, no matter what grade they were in.
Touya was a boy the other kids avoided, because he seemed creepy to them, so he was always alone.
Despite the other kids' constant protests, Keigo befriended the red-haired boy, and since he did, they have been inseparable.
Even when Touya became Dabi, and eventually joined the league, Keigo followed.
They were two peas in a pod, and had never thought of each other as anything other than friends.. Until one night, when the adults of the league decided to play spin the bottle.
A simple game between friends created complications both between the friends, the rest of the league, and even the hero society, and the press.

Who could have known?