Garessta

In this world riddled with strife, where even kids know spells, and powerful mages are nobility, Cael was born with no mana at all. An heir to the family of mages, he was his father’s disappointment, and his city’s laughingstock. But who knew that he had a much different destiny? To prevent a looming catastrophe no one else knows about—to stop the Starspawn. 

“Blood Mage System activated. Greetings, user. I am your Blood Mage System. Consume the blood of powerful creatures to purchase new abilities.”

With that power, Cael will become a hero able to stand against the fate that crushed countless others—even if the world will call him a demon instead.

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Although the novel has a harem and r18, neither are the focus of the story. Cael only has very few (2 right now and at the moment I don't plan on increasing this amount) girls, and there aren't that many r18 scenes. Take that as you may~

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My Blood Mage System

"Evade!" Tarek shouted, waving his hand.

The spectral jellyfishes, obeying the command, dashed to the sides. They moved much swifter than their appearances suggested, and Cael almost fell off his one from the sudden burst of speed.

As massive as the kraken was, it wasn't too quick, and the distance between it and the adventurers was great. The tentacles landed on the empty space far away from them, splitting the sea with a deafening splash and rising twin walls of waves to the sky.

Cael found himself next to Niko and Myrna, while Tarek stayed on the other side of the waves. Cael sensed the summoner was alright, though, and still moving quickly.

The kraken was moving, too. Cael sensed more tentacles coming, both from above and from below.

Deep blue, part 3