Our duty is to help those guests find something, it may be a person, it may be an object, in short, it is the past that they discarded.
Although I sometimes despise their attitude of pretending not to care even though they clearly want to get it back, I can't help but envy them.
Of course, I don't envy others, I just envy them for having memories.
Because I am a person with amnesia and know nothing about the past.