Izana07

“Look, I don’t need to be the strongest — I just need to be slightly stronger than the guy trying to kill me.”
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Zayn Eldrake was nothing more than a nameless extra in the grand tale of summoned heroes — a disposable swordsman in the legendary Hero of Light’s party, fated to die in an early battle against the monsters of the Apocalypse. 
But when he awakens in this doomed body with memories of his past life, he refuses to meet the same pathetic end.
He knows the story. He knows the heroes. He knows their strengths, their weaknesses… and most importantly, their women.
With the power of [Devourer’s Pact], Zayn can consume the abilities of those he defeats, transforming himself into something far greater than a mere extra. 
Strength, magic, divine blessings — everything in this world is his for the taking. And if fate itself stands in his way? He’ll devour that too.

Ruins?