[Being alone isn't a new concept to the Once-ler. After all 'alone' is his most common state of existence, and he has a lot more of it ahead of him. Still, he didn't expect to be alone in the castle of all places.
With a frown, he continues walking along the halls, he's not even looking for anyone in particular. But it's better than sitting still]
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With a frown, he continues walking along the halls, he's not even looking for anyone in particular. But it's better than sitting still]