From Lewd4Yaoi Scans:

I don't think anyone will have sex with a dog. I have this older childhood friend, Shuu-chan that I always follow around. One day, I was touched by one of Shuu-chan's friends, and Shuu-chan who was angry overwrites everything by sucking my dick. I would say it was magic, but after seeing me sulk, Shuu-chan and I finally become lovers. After dating for a year, we have never gone pass deep kissing (the first base?). That's why now I'm doing the seduction, and it seems like Shuu-chan is having a hard time controlling himself!