Monkey D.Crystal is twin sister to Monkey D.Luffy they travel to together to find one piece they end up.getting crewmembers ship and go amazing and crazy adventures along the way Sanji and Zoro always fight bit most times they fight about Crystal who better boyfriend for her Crystal just got finished in bathroom bathe when she came outside sanji start swirling towards her Sanji:Crystal-Swan i fix your favorite~! you felt hand on your shoulder you look and saw Zoro Zoro: Come train with me.