Father and son
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/54724404@N08">Yoshimitsu Kurooka</a>
CC BY-SA 2.0
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/kurotango/25829692257/">kawasaki tamagawa</a>