Dante is a character from the game Nu: Carnival, voiced by Hiiragi Santa.
Official description from the game’s website:

The ruling Sun Lord of the Fire Territory's Solaria, Dante takes great pride in the power and influence he possesses. As such, he measures all individuals by their varying strengths and weaknesses.
With a cold and arrogant demeanor, he allows himself no flaws; no matter whether it comes to battle or ruling a city, he's a natural. However, sharing his true feelings is a different matter entirely...