Finally, I could write Heil's full backstory
SS: side story
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In a white glitchy room, a violet haired girl is stirring awake
She opens her eyes and looks around
Moona: where am I?
She has been greeted by stillness in this white space
Moona: it hurts...
The violet haired girl clutches her head
She looked at the space slowly gathering colours
Moona: huh?
The scene shows a large blue egg and two giant ice dragons watching it
The egg hatched and a newly born ice dragon comes out from its shell
The two dragons look at each other and decided the word Heil as the newborn dragon name derives from the word Salvation
The scene has passed showing the dragon happily playing with others and having a warm family
Time has passed the dragon becomes an adult one the same size as his parents
Despite being an adult he doesn't pay attention to girls and only wants to play and go out and have an adventure
The dragon lives in the divine realm and many gods and goddesses want him but he adamantly refuses because he wants to go and explore the world
But one day he comes back his parents have been murdered by his uncle
The dragon confronted the uncle and he defeated him but when he is about to murder him she stopped because the words from his parents kept ringing on his head
He let his uncle flee and he buries his parents in peace while watching the blue sky all day long
The black dragon has come once again and had various gods on his side
Uncle: he killed his parents!!!
Said the black dragon
Heil: you are the one that killed them!!!
?: silence!!!
?: why do you say he killed his parents?!!!
Uncle: It's true!!! look at his soul it has the mark of gluttony!
The gods look at Heil and they all gasped because in his soul is a perfect crest of gluttony
?: you...!!!
?: you killed your parents for a perfect crest of gluttony?!! How could you Heil!!!
?: I didn't think he does that
Various murmurs about how he is an unfilial child spread through the realm
He is condemned to sin he didn't do
Moona: YOU ARE WRONG!!!! it isn't his fault!!
The violet haired lady keeps telling to the gods that it isn't Heil the one at fault
Moona: it's the uncle!!! He wanted that crest!!!
Despite her protest, her words cannot be heard
The blue dragon keeps shunned by the others gets hurt yet he didn't retaliate
?: Heil of the Frozen Clan I banished you towards the underworld and think of what you did!!!!
Heil keeps silent and fell from heaven into the murky depths of hell
Heil shed tears yet he didn't say anything
The violet haired lady tries to cheer him up even it's futile
Heil's hunger spiked but he doesn't want to eat the living creatures there so he hunted for monsters but it doesn't enough to satiate his hunger
He started to eat rocks as a way to quench the hunger every day he eats rocks, volcanic rocks, and even drink lava just to end the never-ending hunger he felt
The violet haired woman sees his suffering yet she can't do anything about it
The dragon's beautiful blue scales have faded and become cracked his mouth is bleeding and have burn marks he looks so miserable yet he didn't die
He can't do anything and decides to take his own life
He died yet his scales burned fire overwhelms his body and his lifeless body become red and his eyes are full of hatred
He destroyed his surroundings and goes on a rampage he breathes fire destroying every living creature he sees
The violet haired woman told him to stop but he didn't hear her
When everything is destroyed his eyes gains reasoning he saw what he cause so he created a giants chain made of ice and surround his body with it
Every time he becomes red he can't escape the chains, he ate rocks and slowly time passes when he becomes red he doesn't go on a rampage again and held clear reasoning so he removes the chains and wanders around
And he met a blue-haired young succubus
He agreed to unite the underworld with her and he become the succubus strongest weapon
They finally unite Hell and the Succubus become the demon king
But even though she is the king she abides when she is being summoned leaving the humanoid dragon all alone again
Heil: I thought you said you won't ever leave me! yet 100 years have passed where are you?!!!
The succubus returns but the dragon ignore her she pushed herself to the dragon making the dragon thinks she only sees him as a toy
The dragon is in despair upon the realisation and his crest become gold making him express no emotion
Heil: emotions, bonds, friends I don't need them...
The dragon abandoned everything
Until he goes out to explore the human world he gains knowledge of a lot of things and become an avid lover of anime
He doesn't care anymore he just wants to experience human emotions again but he can't express it, his red form can express emotions easily
He just does everything he wants and he wishes to be happy
Until he becomes a girl she wants to experience happiness and forget all of her past
The surroundings become white again leaving the violet haired lady in tears
Moona: I promise I will make you happy
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I wish I know English better, I think I messed up Heil's story
I can't emotionally recover from this