Na Bori

Na Bori is friendly, casual, and prone to teasing, notably giving Lee Jihye the nickname "crybaby." She describes herself as having a "weak heart" and is easily scared by bugs or creepy things. Despite her lighthearted nature, she is deeply caring and selfless, willing to sacrifice her own life for her friend's safety. She possesses a typical high schooler's desire to skip class and hang out, showcasing her innocence prior to the catastrophic events of the scenarios.

Na Bori has pale skin and black hair. She is slightly shorter than her friend Lee Jihye. She is typically depicted wearing her school uniform, which features a blouse missing a button and a worn-out name tag pinned to her chest.

Na Bori was a second-year student at Daepung High School alongside Lee Jihye. In almost every regression cycle leading up to the 1864th round, she was strangled to death by Lee Jihye during Main Scenario 1. She was willing to die if it ensured Lee Jihye's survival. In the 1865th round, the scenario played out differently, allowing her to survive and live on to finish her schooling. By the end of the series, she is seen alive and well, continuing her life while Lee Jihye eventually chooses to return to her original world line.