This is from Ishida's Instagram:-
「1日後に死ぬゴリラ」2日目(完)". I felt like I had to post this alternate ending. Life is fast and flickering, for me the two chapters represented life as a whole. We're just a blink into this ocean of eternity. I've been here to read fiction, but none has come close to reality as this masterpiece. Thus, I felt the responsibility of posting my first three chapters in my native language. The banana has significance for me as well, the regret of things we'll be unable to complete on a lifetime. I hope everyone finds a meaning as well for this extra panel as much as I do.
This is from the alternative ending post.