Rantaro Amami is the Ultimate Adventurer, and one of the Ultimates trapped in the Salmon Mode dating game. He's calm, a bit mysterious, and has a great intuition about other people and himself. He is the oldest brother of eleven sisters, and he's not afraid to be honest when it comes to how much he cares for his family. He's ultimately selfless and can be protective over those he cares about, willing to sacrifice himself for their own safety.