Returner's Quest for Power

Adrian Miller was an ordinary highschool student. When one day he and his classmates were suddenly transported to another world. But he was kicked out of the heroes party. Just because of his slow growth. He was branded useless. Adrian then starts a journey to get power. So that he would have some worth in him. After some turn of events. He finds himself in a position to travel back in time to fulfill a request. He finds himself back to square one. He starts his journey again. Will Adrian succeed in his task while trying to reobtain his lost power?