Chinen's obvious inability...
...to keep his hands and lips (and practically any part of his body) away from yamachan...
KISSING MACHINE!!!
- I love the photographer who shot this
...ahhh, you can just see his satisfaction overflowing from that smile.
And now that they're going to be spending so much more time together with HSJ and NYC boys and all their sub-units, chinen is obviously in cloud 9.