Mizuki Hoshino

Mizuki Hoshino arrived in Borderland on the first day of the first cycle. Her randomly-assigned Borderland ID was 0014. She is known to be aromantic and asexual.

Before Borderland
Mizuki lived with her parents until she was 6, at which point she moved in with her aunt because her parents couldn't take care of her financially. Her aunt was emotionally abusive so Mizuki ran away before she turned 10 and stayed in homeless shelters, on the streets, and with friends until she was old enough to get a job, rent her own place and support herself. She'd been living on her own since she was 18. When she went into Borderland, she was 25 years old.

Borderland
Mizuki woke up in the middle of a large football field in the Gakusha district, before heading to a nearby school for answers to what has happened. After finding nothing of interest at the school or surrounding schools, she admitted defeat and entered a fairground nearby. There, she stole a stuffed animal from a stall and named it 'Harold'. At night she headed towards the ramen store, which had power. There, she played the Ace of Clubs game.

Mizuki, along with the other survivors of the Ace of Clubs game, formed a group and scavenged supplies nearby. On Day 2, the group had to play another game because their visas expired that night. After swiftly completing the Four of Diamonds game with no casualties, the group slept in the leisure center where it took place whilst waiting for the sun to rise. Mizuki, unbothered by Fujimoto's exit, continued the day as normal with the rest of the group. After a day of exploration, they bunkered down in a nearby hotel and decided not to compete in a challenge that night.

On Day 4, the group entered an underground tunnel to play the Four of Clubs game. Mizuki did not encounter the tiger, and was on the bus when the tidal wave hit. She died when the tidal wave made impact with the bus.