I thought it's an Isekai when I read "I suddenly recall", That'll be the weirdest Isekai trope ever, I think. Just change "the old days" with "my past life" and it'll be another title. Lol
Yes, the passing of pando is very sad indeed.
But his spirit is still attached to this very thread.
Perhaps, we could perform a some sort of ritual using the shitpost magic and bring him back to life?
But what could it be?... There has to be something he enjoyed doing in life...