From the Todome no Kiss official blog:
As the horses from the horse-riding club that assisted in our filming this time
are very gentle and adorable,
Yamazaki-san and Araki-san were stroking them, and feeding them food.
It was a wonderful sight even when the camera wasn’t filming.
We’re releasing exclusively on our blog off shots of Yamazaki-san
in such a horseriding club!
This day, even though he has been filming since early in the morning,
he still posed for the camera!
Such a nice person!!