Read the following article and answer the question.

Hakkai blinked and looked up from where he was kneeling on the floor of the small bedroom , digging through his pack in search of his toothbrush . Hakuryuu was already asleep on the pillow of the spare bed . " It was just a simple room switch , Goku , " Hakkai said with a smile . Goku huffed slightly .

Why might Hakkai looking for his toothbrush ?
None of the above choices .