Raul who had defeated the demon king as the strongest hero should have become the savior of the world. Having his treasured companions and family killed by power hungry aristocrats, he was executed with false charges brought against him by the princess. Just before his life collapsed, at last his heart fell into darkness."... I will tear those traitors from limb to limb. Burn them at the stake. Sever them to pieces. Skewer them. I will kill every one of those bastards without mercy and make them taste hell.....!!! "Obtaining the power of darkness, Raul was revived. Sneering, he vowed revenge. “Oh, I’m looking forward to it – I'll bask in their blood to my heart's content.” Several days after the hero's revival in the imperial capital where flowers bloomed in profusion, the parade that would advance towards tragedy began.
basically Our MC was betrayed by the princess, camarades, citizens and is killed.He then goes back to where the godess first sent him, and he gets back his powers and his life. Now he is aiming at getting revenge on everyone. The story is quite hard to understand at the beginning, but it improves as the mangas goes... I think the best thing the manga is the way our MC is planning to get he's revenge read more
Fukushuu wo Koinegau Saikyou Yuusha wa, Yami no Chikara de Senmetsu Musou suru (Light Novel)