The Sound of Ancient Weapons in the New World

I met a fool. The fool always said that I didn't want him anymore. I didn't want him anymore, I just didn't want to steal the fool's things. The fool found me after all the hardships. I thought it was a sweet love story, but I didn't expect it was just the beginning of a passionate story. My mission is too big, I'd better help my elder brother get back his place first!