That is strange. First time he appeared he didn't have a beard, right? Then when he met Alpha, he was bearded, but now, he was shaved. Flashback? Timey wimey wibbly wobbly stuff?
If that statue is somehow Alpha, then that might start to explain why this series is tagged as a drama. So far it has been a (very) cute slice of life about a robot girl that is more of a human than anything else.
By the way, is it just me or did Takahiro look older in the last page?