I'll quote only the text(check the link for screenshots):
MONSTA X “SHOOT OUT” THEORY: sins, death, punishment and leave everything to walk to the light The MV set when they’re in Purgatory, receiving their punishments for their sins This is the follow-up after the film, when Changkyun found his leader (Hyungwon), and connect everyone
Hyungwon - Pride - Lucifer He is the first angel to betray Heaven. He’s sitting on the crown but has no one to rule. This is the worst nightmare for s.o love people’s admirations. The necklace is “Appelle Moi”, means “call me” in France. But ofc, there is no one to worship him.
Also, for 7 deadly sins, Pride is the only one with a virtuous side. That’s why he has tears in his eyes when he’s holding the gun. He’s regretting. The ending, he dropped his bullets nhis gun, also leave his crown. He doesn't want the power anymore. He wants to be with “them”.
I.M - Envy - Leviathan He is the prince of Hell guards the gate bw Asiah (real world) n Inferno (hell). He was lost until Lucifer/HW found him. Also explain why the red door is in the sea, bc Leviathan is a sea monster, has a dog always with him (the dog next to HW’s crown)
His punishment was the curse tattooed on him “
:”: He will never have anything that makes him happy. It’s always there with him. And he's all alone. At the end, he decided to burn his card, aka the Envy. He let go his selfishness.
Kihyun - Greed - Mammon The power. He wants it all. His punishment is being trapped in a room with full of mannequin, which symbolized for “fake”. He can have nothing but only the fakeness, the faceless figure. At the end, he decided climb his staircase, share it with them.
Minhyuk - Lust - Asmodeus always earning for affection, scared of hurting. His punishment: trapped in a case of thorn (means pain and pleasure) At the end, he gave up his pleasure, grabbed the thorn, let himself feel the pain. He free himself from his own sins. To be with them.
Wonho - Sloth - Belphegor Trapped in a small cage, inside the infinity, full of smoke (avoidance). He avoided his fate. (the one who always turn his back) At the end, he became the actual one to rule them. He lead them to the higher. He’s no longer avoid his responsibility.
Shownu - Wrath - Behemon Burning his flame with a matchbox named “Wrath”, but that’s all he has. He can’t release his emotion, that’s the worst punishment for him. At the end, he opened his eyes, decided to wake up from his anger. To be with them.
ooheon - Gluttony - Beelzebub In the MV, his punishment is he has to wore the mask so that he couldnt take in anything anymore. He’s also trapped in the cage in the middle of nowhere. (The story didnt mention how Jooheon can be release from his sins)
the MV's ended with them in their praying/surrender positions. Which means they gave up their selfishnesses, their own benefit. They have been forgiven for their sins, their fight with darkness and light.
however, in the MV. 3 cactuses as SN- WH - JH in a room with plants. Cactus, in Greek is “kaktos”: a plant that has spiny thistles to protect it. It means they have their own reasons to became like this, to commit their sins. Just that they decided to give up their faiths.