Matoi Santa

Ever since Santa became the Crab Group's keeper, the Crab Group has always been the first to arrive, and is the envy of the other groups. Santa was the first to arrive at the scene of this fire, but he noticed something strange about the atmosphere. Then, from inside the mansion, he witnessed a hairy, inhuman hand grabbing the hand of someone calling for help...!! What did Santa see inside the mansion, just as it was about to collapse?