Adventurer Tale of Pouring 25 Years of Life into a Useless Skill, and Now After All That Time is the

Adventurer Tale of Pouring 25 Years of Life into a Useless Skill, and Now After All That Time is the Strongest - A skill useless from the beginning,
“Restoration”. Regardless, in order to save a childhood friend who
sacrificed her body to protect him, Touru spent twenty-five years
developing the skill. Once completed, the skill could completely defy
the world’s common sense. Touru, the girl, the naughty child they picked
up in a back alley, and the old landlord lady join together as
companions, setting out on an adventure to become heroes. A man who
lived through the depths of despair decided to move forward and widen
his horizons.