The Hero Laughs While Walking the Path of Vengeance a Second Time, Vol. 1 (manga)

Kaito has been summoned into another world as a hero, and though all goes well for a
time, one day his entire party betrays and mercilessly kills him. So when he suddenly
gets a chance to redo his life, starting from the point he was first summoned to this
world, he swears to exact vengeance on everyone who stabbed him in the back...