A Coincidence, Baby

Yoshizawa Kuuya, a high-schooler, grew up in a single-parent family. Because his mother was an unpopular actress, he had to work part-time as a pizza delivery boy. While making his delivering one day, he accidentally met a gay couple arguing and one of them was his sensei, Kakei Yuuichi. After that, they started to get closer. Was it a coincidence or a destiny?