Yaku no Ouji, Saikyou no Genjitsu Eiyuu o Shitagaeru

The peaceful Kingdom of Maynoo was destroyed by the sudden invasion of the Pelligia Empire. Yoru Maynoo, the prince of Maynoo and a magic prodigy, was used as a living battery to drain his magical power for the empire’s prosperity. When his power finally hit its limit, he died from exhaustion.At the threshold of life and death, Yoru is guided to Avalon’s Gate, a realm where legendary heroes assemble. To fulfill a promise to his beloved sister Noel, he proposes to restore the heroes’ lives in exchange for their strength. Intrigued by his offer, the heroes accept the gamble, granting Yoru a miraculous return to life. Leading real world heroes like Souji Okita and Joan of Arc, the former genius mage embarks on a tale of unstoppable vengeance. [Original Webtoon](https://jp.piccoma.com/web/product/214799)