Tomoya Okazaki isn’t the most athletic character anymore because of the injury to his arm but he would still be able to take Caillou down rather quickly. Tomoya has the age advantage and he seems like the kind of guy who wouldn’t mind getting into a bit of a fight. Caillou doesn’t have that same mindset and would end up just being overshadowed here. The fight won’t last long. Tomoya Okazaki wins.