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

Ginevra reacted to Dieter's words accordingly—she put a hand over her own weapon. "Sure they don't," she growled. "Because of the smug pricks like you."

"Yeah, show them, guys!" Myrna cheered from the side, glaring daggers at Occhio. "You started it, but do you think you stand a chance? Cael alone can wipe the floor with you!"

This made everyone turn towards him. Cael's upper lip curled in a snarl, but it was only half directed at Dieter. The rest went for the situation.

He didn't make his earlier decision about a truce, only to start fighting now! Plus, he had a feeling that something was off, but he couldn't put his finger on it.

Cael really, really wanted to brag—say something 'Yes, I totally could rip you into pieces with my bare hands, Dieter, so wipe that smirk off your face,' but he bit on his tongue. Literally.

He was a mountain, and that mountain won't be pierced even by a mana maelstrom. His decision stayed the same.

Fifth hour, part 2