Chaehyun

• Chaehyun trained for approximately six years before debuting. She spent about four years under SM Entertainment and another two years continuing her preparation independently, making her debut the result of a lengthy training journey.

• She left conventional schooling to focus on becoming an idol. Chaehyun made the decision during her early teenage years, allowing her to dedicate more time to training and music.

• She completed her education through qualification examinations. Rather than following the usual school schedule, Chaehyun passed the middle-school and high-school equivalency examinations while pursuing her career.

• She trained at SM Entertainment before participating in Girls Planet 999. Her experience at one of South Korea's largest entertainment agencies helped develop her vocal technique and performance skills.

• Chaehyun has mentioned Girls' Generation's Taeyeon as a musical role model. Taeyeon's vocal abilities and solo career have been among the inspirations associated with Chaehyun's musical development.

• She is also a fan of SEVENTEEN and DAY6. Her musical interests include both performance-oriented idol groups and bands known for their live instrumentation.

• Her first Girls Planet 999 evaluation included an aespa song. Chaehyun performed "Black Mamba," drawing on a song associated with the company where she had previously trained.

• She initially ranked 23rd among the Korean contestants. Her eventual first-place finish represented a dramatic improvement from her early position in the competition.

• Chaehyun became one of the most recognized vocalists on Girls Planet 999. Her performances attracted attention for their controlled singing and ability to communicate emotion.

• She participated in the memorable "My Sea" performance. The IU song gave her an opportunity to demonstrate her vocal abilities through a demanding ballad rather than an energetic dance performance.

• Her "My Sea" performance became an important moment in her survival-show journey. The stage helped showcase her singing to viewers who were becoming familiar with the competition's contestants.

• Chaehyun reached the final debut lineup after starting outside the initial top rankings. Her progression illustrated how audience support could change throughout the competition.

• She received more than one million points in the Girls Planet 999 finale. Her final score of 1,081,182 points placed her first overall.

• Her victory made her Kep1er's first-ranked member. Although the group operates collaboratively, Chaehyun's first-place finish established her as its center.

• She has a recognizable clear and delicate vocal tone. Her singing is often characterized by smooth phrasing and emotional expression rather than relying exclusively on powerful belting.

• Chaehyun has experience playing the guitar. The instrument is among the musical interests she has mentioned outside her professional singing activities.

• She enjoys photography. Taking pictures is one of her hobbies and gives her an opportunity to explore creative interests beyond music.

• She likes watching movies and television dramas. Screen entertainment is among the activities she enjoys during her free time.

• Chaehyun enjoys reading. Her hobbies include quieter activities that contrast with Kep1er's demanding rehearsal and performance schedule.

• She likes playing games. Gaming is one of the recreational interests listed in her published idol profiles.

• She enjoys DIY projects. Making and decorating things by hand is among the creative activities associated with her personality.

• Chaehyun has studied Japanese. Her language skills have been useful during Kep1er's extensive Japanese promotions.

• She became a music-show MC shortly after debuting. In January 2022, Chaehyun was announced as a host of SBS MTV's The Show, expanding her career beyond singing and dancing.

• She hosted The Show alongside ATEEZ's Yeosang and CRAVITY's Minhee. The role required her to introduce performances, interview artists and interact with viewers during live broadcasts.

• Her representative emoji is a tiger. Fans commonly associate her with the tiger emoji, which appears in Kep1er member profiles and fan discussions.

• Her nickname Chaerom-ie is used affectionately by fans. The nickname is one of several variations associated with her name and personality.

• She has participated in Kep1er unit songs. Her unit appearances include "Tape" from Magic Hour and "Highlight" from the Japanese album Kep1going.

• She appeared on King of Mask Singer in 2024. The singing competition gave her an opportunity to showcase her vocals in a format centered on individual performance.

• Chaehyun released her first individual song in December 2025. "You Won't Forget Me" features a band-based arrangement and emphasizes her emotional singing style.

• She remained with Kep1er through two major lineup changes. Chaehyun continued after Mashiro and Yeseo departed in 2024 and after Youngeun's departure in March 2026, becoming part of the group's six-member lineup.