Hired To Clean POOP But A DONKEY Kick Unlocked His SSS-RANK SYSTEM OP

What the story is about

After waking up in the body of a poor teenage boy in a dangerous fantasy world, Rain Kalin discovers a system that rewards him with skills and experience for learning practical trades and combat. As he trains to become stronger, he draws the attention of the powerful Lady Clea and becomes determined to protect his family and those around him.