Ueki no Housoku Plus

Two years after a competition for the next god, Kosuke Ueki is a third-year student at Hinokuni High School. For unknown reasons, people have forgotten their most important relationships, including Ueki's friends who were involved in the event. Unaffected by this memory loss, Ueki seeks to restore their recollections. He follows a small sheep named U-lu to a realm known as Hankagai, where he encounters new allies and acquires new abilities.