A third wheel

This is my AU where Inuoka and Shibayamahave been friends since grade school and Shibayama meet Kuguri in Junior high.

Shibayama Yūki and Inuoka Sō have been best friends since grade school. They always have each other's backs and always stay together. Except one day.. everything changed. Shibayama met a guy named Kuguri. In the middle of the school year they started dating. After that Shibayama started to hang out with Kuguri more and Inuoka always asked if they could hang out Shibayama always said "tomorrow" and it never happened. All of that was three and a half years ago and after that, everything changed for the three.