Last Battle no Sono Ato de: Level 99 no Zutaboro Yuusha wa Mental Care no Tabi ni Deru

Having carried the hopes of an entire nation, the hero Selvi and his companions finally defeated the Demon King. After years away, Selvi returns home to reunite with his beloved younger sister—but the fierce battle with the Demon King has left him broken in both body and mind…!? Now, the hero who once saved the world sets out on a new journey—to heal his heart and body.