I have the same doubts!
probably he was not, thats why there is a note saying "this time you find me"
I think it's Dai. I'm 99% sure it's Dai!
I agree with anonymous on this
But just to play it safe I wished the creator would just make a sequel or a side story of Jahee in America or something
Yes, that would be awesome!
i just finish reading let dai i dont understand last part was that person dai if he was then why he didnt come to jahee openy