Based on Jin's Notes that Bighit posted. 

  At the beach and the Bangtan tunnel was very happy because the beach image was the opening image for the HYYH series. After the beach scene, the image of the concept I Need U members in the house are very lonely can be between each person has conflict (or quarrel). Save Me and I'm Fine in the poster depicts the suicide incident that Bangtan members in the MVs are involved in. Yoongi locked himself in the room and lit the gasoline lighter, Jimin tried to commit suicide by drowning himself in the water tank, J-Hope suicide by drugs, Namjoon's brother and also always alongside Taehyung prevented him from suicide. . The killing of Taehyung's father in I Need U Verison 19+ is not real, but it is just a quarrel between Jin and Taehyung because in Blood Sweat & Tears Japan there is also a scene where Jin punches Taehyung before Taehyung hits Jin. The Japanese version of BST partially explains I Want U's old story and continues to write new stories. Taehyung's sisters are actually Namjoon and Namjoon has prevented the two of them from colliding, while preventing Namjoon from being hurt. That is why the Japanese version of BJ has the Namjoon hand wound. Sister Taehyung is just a reflection of Namjoon because Namjoon and Taehyung have similarities and details in the MVs and poster images both Taehyung and Namjoon are linked together. If Bighit brings the situation to both Jin and Taehyung shoved together and Namjoon intervenes in the MV, then everyone will quickly guess the plot so Bighit has built a new situation and then reflect on the picture. The image of the old bucket and that is also the reason why Namjoon's solo song is called Reflection. If you pay close attention to all of Namjoon's MVs, they will always be with Taehyung or be the one who will stop Taehyung from doing something wrong. In the Short Film, the call that made Namjoon run to the phone booth was a call from Taehyung and due to not being able to hear the call, Namjoon could not save Taehyung, Taehyung said he was sorry and jumped on the beach. That is why in the letter of Bighit Jin has said that people no longer find Taehyung means that Taehyung is dead (may not be in the new series Love Yourself). Namjoon regretted after not finding Taehyung so he tried to hurt himself with a tattoo in the short film.

 Yoongi was the one who wanted to commit suicide in front of Jungkook and after discovering that he wanted to commit suicide Jungkook and Yoongi fought each other. Jungkook and Yoongi's fights in the run if they look closely will see Jungkook trying to hug him to stop him from doing something foolishly wrong. After the fight, Yoongi awoke and Jungkook was pissed off and then shoved after a traffic accident. In the short film First Love after fighting Yoongi saw her old guitar and remembered the day she should have her baby sitting and hear the whistling signal danger, maybe Yoongi has a bad hint of whistling This should have run out to find Jungkook and that is why in the short movie even when Jungkook calls Hyung, there is a car that crosses Yoongi. Yoongi was also the first to discover that Jungkook was injured by the bloodshed on his first movie, Jungkook. Yoongi ran to Lay Jungkook in the BST because at that moment Yoongi found his sister accidentally and the person who put Jungkook into the hospital was Yoongi based on Jungkook Poster in the hospital and Yoongi sitting outside waiting.But there is another theory that may be in the HYYH Jungkook series after the car accident died and watched over his brothers as evidenced by the short film Jungkook woke up to find himself lying on a white bed No one around. Jungkook saw the danger that his brothers were about to face and tried to whistle. Despite the signal, Jungkook's brothers are still in danger (Yoongi) and keep their suicidal intentions (Jimin and Hoseok) so Jungkook cried and called "Hyung". Yoongi died from a fire in the segment itself locked into the room and lit petrol in the music I Need U because in the short film around Yoongi only fire. After the death Suga found his old guitar back and because he still did not know he was dead so when he heard the whistling signal dangerous Yoongi ran away because he thought he was still alive after the car arrived. Yoongi only knows she died after the car broke through but did not hit Yoongi. Where Yoong was standing in the short movie was where Jungkook had an accident so there was blood on the road.It is possible that only Jin and Namjoon were alive or that only Jin was the only survivor of the poster. If Jin was the only one alive, all of the scenarios in the music videos were taken by Jin himself to the places where the group was having fun and remembering everything. The scene of the group playing in the abandoned house completely without Jin because Jin is the one who came back to capture the old vestiges of the members and recalled everything based on the photo shoot. Jin dropped the camera down and laughed lightly. . The most MV is the MV Run scene where the group is happy suddenly Jin's face is very panicky like the way back to reality. And if Jin and Namjoon were alive, it would mean that Jin was completely unaware of this, he just thought all the members were dead so when Jin went to the gas station met Namjoon there and when the car fell When Namjoon saw Jin, they were both surprised.The new series may talk about the awakening of the members, looking back to the fun and happiness of the beginning after trying to commit suicide so it's called Love Yourself. Regarding J-Hope and Jimin, we must wait for more clues from Bighit and speculate.