Jhope afterward drugs himself and kills himself as he had no one anymore. whereas Namjoon and Tae were always together but Tae was sued for apparently killing his father (the one showed in INU was his imagination, one he was forced to believe he did) Namjoon was obliged to accompany Tae as he was the one who killed Taes father. When Tae was taken to jail, He asked to call Joon once which joon didnt pick up.(the chains in reflection represent his guilt-fear driven worry over facing Tae) Tae thinks Namjoon left him hence 'if i had made another choice would you have not left'. However it is not the case for Namjoon, He is simply guilty for making tae go to jail because of his deed. But he still tries to take care of tae which is why his poster reads 'i can only watch you from behind because now is not the right time'. Yoongi and Jungkook were bestfriends until they fought once because Jungkook tried to stop Yoongi from smoking (run) but sadly, he didn't so Jungkook left the house and on the way he got hit by a car and lost his memories. He remembers when he sees the girl playing the same melody he had composed together with yoongi and sees yoongi's lighter.