kind of weird that he didnt went with them home since he obviously went back to his apartment to avoid being to close to her scared that she would find out. Now he can... tho might be a good thing to have his own apartment in this case.
page 20 is... not physically impossible, but a very awkward position for your arm. Kinda painful, and I'm a pretty flexible fellow. Would make more sense if his hand was in a different position.