The Ephemeral Scenes of Setsuna's Journey (light novel)

Setsuna Sugimoto is summoned to another world as the 68th hero only to be abandoned because of his weak and sickly constitution. But everything changes when he’s given a third chance at life by his dear friend Kyle, the former hero, thereby inheriting his vast knowledge, power, and lifeforce. Freed from the tethers of his past, Setsuna begins a journey as an adventurer where he’ll encounter all walks of life, each experience bound to leave their mark on both him and his world.