In a field in the afternoon where the sky is starting to turn bright orange, two high school boys are seen talking to each other. They have been friends since childhood. As is the case with friendships between boys in general, they make it seem like they are real brothers. They have experienced many things during their friendship. Until one day, one of them experiences a change that is quite... significant? Will that keep them friends like before? Will it become a gap between them? Or will something else happen?