In this story we dive into an Au of How not the summon a demon lord basically the same story except Diablo is a woman in game and irl.
I don't own how not to summon a demon lord or any of the art shown in this book okay
A seal is something to limit someone or something's power but these seals are different seals are made to be broken by the wielder in order to unlock their true selves the amount of seals defines how strong someones true self is the two highest leveled players (you and diablo) have a total of 10 seals on each of you with people who only have one seal to break said seal they have to say "seal break" but for those who have multiple seals the they must say "1st seal break" up to "10th seal break" seals also change the host some turning into monsters or keeping their human shape and their armor changes some sprout wings others grow extra limbs.
When we the reader use the 1st seal break we grow a pair of wings that look like this
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All the white is gold and the bright blue turns into a more sapphire blue. As well as a gold tail
Our head and helmet merge together (you saw what our helmet looks like just picture it with four large canines like greed from Full metal alchemist)
Also the whites of our eyes are blue while the colored part is a deep green in this form, however when we use magic all the blue turns in to a ruby red
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And the green in our eyes turn in to a yellow color
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And all the gold turns into a bright orange color (like molten metal)
We also grow an two more wings the further we go up the 10 seals we placed upon ourselves we change in color and size. in case you don't know the 10 seals represent a sun each such as
