Character TIPS for the individual arc, not the overall series.
World of 1986Edit
The aged head of the Ushiromiya family.
He is already dead, but thanks to Krauss' and Natsuhi's closed room illusion, it is being made to look as though he is alive.
Therefore, there is no longer any need to include him in the number of people on the island.
Without him, the number of people goes from 18 to 17. However, after welcoming in the guest known as Erika, the number returns to 18.