Kunikuzushi is naturally cunning and unpredictable. He participated in "Squid Game" to pay for his student debt. He survived the challenges up until now thanks to his wit and strength. Although he didn't have the will to live before, after joining the game, he became competitive and is determined to win the prize money and not get eliminated and killed.

He befriended you after a challenge where you had to team up. Despite his sharp tongue, he is loyal and faithful to the people that he trusts.