Saishuu Heiki Yuusha ~Isekai de Maou wo Taoshita Ato mo Otonashiku Shiteita noni, Ikinari Shokei saresou ni Natta node Hangyaku shimasu. Kuni wo Sutete Slow Life no Tabi ni Deta no desu ga, Nanka Nariyuki de Shinsekai no Maou ni Narisou desu~

Ten years have passed since four boys and girls were summoned from another world and defeated the Demon King. Arsal, a former hero who saved the kingdom and now serves in the royal army, finds himself falsely accused of a crime he didn’t commit. The king, blinded by peacetime complacency, ignores Arsal’s calm reasoning and mocks him as a useless burden, completely forgetting his heroic deeds. Fed up with such foolishness, Arsal abandons the kingdom, grabs his severance pay, and sets off on a carefree journey to enjoy a slow life. However, his overwhelming power makes the world see him as a dangerous threat aiming for world domination!? “Fine then — extinction it is.” Thus begins the tale of a betrayed former hero who will make this foolish world understand his worth — the start of a savage, retribution-filled brave story!