The Hero Laughs While Walking the Path of Vengeance a Second Time Vol 1

The Hero Laughs While Walking the Path of Vengeance a Second Time by Nero Kizuka. A Fantasy manga rated Mature, published in English by Yen Press in 2021.

Summoned to another world, Kaito Ukei became a hero and helped a band of adventurers defeat an evil sorceress, only for his companions to turn on him and brutally kill him. Consumed by the need for revenge, he gets an unexpected second chance when fate returns him to life with his memories intact. Now he sets out to hunt down the party that betrayed him and make them pay. A dark revenge fantasy for mature readers.