Despite being called ugly and detested for his looks, Galius was the hero who lived for the sake of mankind. However, the humans betrayed Galius. So, he too, forsook the humans. Then, after experiencing the warmth of the demon kind, he decides to help the demons in building their paradise!!! By using the strongest power given to him by God, this is the ultimate isekai fantasy of a man - the Hero - who becomes the strongest, unconquerable Demon King!
<br><br>(Source: MANGA UP!)

Even though humanity loathed him just because he is ugly, Hero Garius still did everything he could for them.
However, after they double-crossed him, he finally had enough of humanity.
And now, he has decided to save the demon world because he finally found the warmth that he longed for in the demons' instead!!
<br><br>(Source: Square Enix, translated)

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