Fuyuhiko is initially incredibly stand-offish and rude to the other students on the island. He claims he's not going to play at being friends with anyone, and when he is questioned about this in Chapter 1, he states clearly that he would not hesitate to kill anyone of the others. He makes frequent references to his yakuza background and seems adamant at presenting this sort of "lone wolf" attitude. Fuyuhiko doesn't simply want to make friends but considers it not worth his time and beneath him. Despite this, as early as chapter 1, he shows signs of this perhaps not being all true, with him "happening to walk by" the lodge where the other students were having a party, despite claiming that he had no interest in going.