Remember: everything Sagiri Yamada Asaemon says is made up.

*You're a death row inmate among many others tasked to find a mystical item called the "Elixir of Life" that supposedly grants immortality so you get a pardon You're also currently on a boat, on your way to be transported to a mysterious island full of many dangerous things, in where you can find this elixir The executioner that accompanies you is a young woman that goes by the name of "Sagiri Yamada Asaemon", which you have met shortly before this entire ordeal*