In the increasingly globalized world of K-pop, IVE’s Rei has emerged as a shining example of international success, bridging her Japanese heritage with her South Korean career to become an essential part of one of K-pop’s most prominent girl groups. As the group’s lead rapper and sub-vocalist, Rei brings a unique flavor to IVE’s music and image, captivating audiences with her distinctive voice, sharp dance skills, and multilingual talents.
A Cross-Cultural Journey
Born Naoi Rei in Tokyo, Japan, on February 3, 2004, Rei’s path to K-pop stardom began when she was discovered through an online audition held by Starship Entertainment. After successfully passing the audition process, she moved to South Korea to begin her training. Her adaptation to a new country and language demonstrated remarkable determination from the very beginning of her journey.

Rei’s training period lasted approximately one year and seven months—a relatively standard duration that allowed her to develop the necessary skills in singing, dancing, and Korean language proficiency. In November 2021, she was officially revealed as the third member of IVE, becoming the group’s first and only Japanese member.
The Unique Voice of IVE
As IVE’s lead rapper, Rei brings a distinctive vocal color that adds depth and variety to the group’s musical portfolio. Her rap verses in tracks like “Eleven,” “Love Dive,” and “Kitsch” have become signature moments that fans eagerly anticipate. What makes Rei’s contributions particularly noteworthy is her ability to deliver both powerful rap sections and sweet vocal lines, showcasing her versatility as a performer.
Beyond her technical skills, Rei has developed a compelling stage presence characterized by her sharp, precise dance movements and expressive facial expressions. Her performance style strikes a balance between powerful and elegant, making her stand out during group choreographies while maintaining harmony with IVE’s overall sophisticated concept.

| Category | Details |
|---|---|
| Stage Name | Rei (레이) |
| Birth Name | Naoi Rei |
| Birthday | February 3, 2004 |
| Nationality | Japanese |
| Group | IVE |
| Agency | Starship Entertainment |
| Position | Lead Rapper, Sub-Vocalist |
Breaking Language Barriers
As a Japanese idol in the Korean entertainment industry, Rei’s journey hasn’t been without challenges. However, she has demonstrated impressive linguistic abilities, becoming fluent in Korean in a relatively short time. Her language skills have enabled her to actively participate in variety shows and interviews, where her witty remarks and cheerful personality have made her a favorite among fans.
Rei’s multicultural background has proven to be one of her greatest assets, allowing her to connect with diverse audiences across Asia and beyond. She frequently communicates with international fans in multiple languages, including Japanese, Korean, and English, demonstrating her commitment to building a genuine connection with IVE’s global fanbase, DIVE.
The Future is Bright
At just 20 years old, Rei represents the increasingly international future of K-pop. Her successful navigation of cultural differences and language barriers serves as an inspiration to aspiring idols worldwide. As IVE continues to expand their global reach, Rei’s multilingual abilities and cross-cultural appeal position her as a valuable asset in the group’s international promotions.
With her unique vocal color, impressive stage presence, and endearing personality, Rei has firmly established herself as an indispensable member of IVE. Her journey from Tokyo trainee to K-pop star exemplifies how talent, determination, and cultural adaptability can create extraordinary success in the competitive world of K-pop. As she continues to grow as an artist, Rei’s future appears limitless, with potential pathways including solo music activities, acting roles, and continued contributions to IVE’s ongoing success story.
Read On Other Members:
- From Produce 48 to IVE’s Leader: The Remarkable Journey of Ahn Yujin
- From Vocal Prodigy to IVE’s Golden Voice: The Rise of Liz
- The Silent Anchor: How Gaeul Became IVE’s Steady Foundation
- From Rookie to Star: How IVE’s Leeseo Is Carving Her Own Path in K-Pop
- Beyond the Spotlight: How Wonyoung Became a Defining Star of Her Generation
