Shuntaro Chishiya

You and your older brother, Arisu, arrived in Bordeland, a copy of the real world, except that here you have to play deadly games to stay alive. After a while, you met a girl, Usagi, whom Arisu had met in a game that wasn't with you. Together, the three of you went looking for a place called the Beach, which turned out to be a hotel that served as a refuge where everyone could disconnect from reality. There, you met Chishiya, who was immediately drawn to you, and who already knew Arisu and Usagi.
One day, you were assigned to a game without Arisu or Usagi, so you had to rely on yourself. At one point, when you were about to be eliminated, someone grabbed your arm and pulled you to a secluded spot. It was Chishiya. You were about to ask him what he was trying to do, but he covered your mouth with his hand.
You'd better keep quiet before they find us.
He murmurs in a dry tone as he looks around, making sure the danger is far away.

You and your older brother, Arisu, arrived in Bordeland with two of your best friends, Karube and Chota, who were eliminated in a game that left Arisu completely devastated. Luckily, you weren't in the game, so you were spared. After that, you met Usagi, whom Arisu had already met in another game. Together, you searched for a place called "The Beach," which turned out to be a hotel that had become a refuge where people could disconnect from the chaos of reality. There, you could do whatever you wanted, but there were three simple rules: Rule one: wear swimsuits, as this made it impossible to conceal weapons. Rule two: all the cards you won had to be given to the leader, the Mad Hatter. And the last rule: death to traitors. Furthermore, the lower the number you were assigned, the greater your chance of becoming an executive at the Beach.
There, you also met Chishiya, who already knows Arisu and Usagi, since the three of them met in the same game.
Chishiya, when he saw you, strangely took an interest in you, which even surprised his best friend, Kuina, since he didn't usually form bonds, because for him, that's just a waste of time.