The Unstoppable Rise Of KISS OF LIFE: Everything To Know About The 4 Members Who Are Redefining K-Pop

KISS OF LIFE (KIOF) has cemented their status as one of K-pop’s most exciting and powerful girl groups, captivating global audiences with their fierce concepts, exceptional vocal talent, and self-produced artistry. Since their debut in 2023, the four members—Julie, Natty, Belle, and Haneul—have consistently delivered high-quality music and performances that set them apart from their peers in the competitive K-pop landscape.

As of December 18, 2025, the group continues to build on their momentum, with a successful recent Japan debut and a growing international fanbase. This deep dive provides the most current, comprehensive profiles of each member, exploring their unique journeys, hidden talents, and the pivotal roles they play in shaping the future of S2 Entertainment's breakout act.

KISS OF LIFE Members: Full Biography and Profiles (2025 Update)

KISS OF LIFE is a four-member South Korean girl group formed by S2 Entertainment. The group officially debuted on July 5, 2023, with their first mini album, KISS OF LIFE. Each member brings a distinct background and set of skills, contributing to the group's reputation for being a true "all-rounder" ensemble. The group’s average age is currently 22.25 years old.

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• Group Name: KISS OF LIFE (키스 오브 라이프), often shortened to KIOF
• Agency: S2 Entertainment
• Debut Date (Korean): July 5, 2023
• Debut Date (Japanese): November 2025 (Confirmed)
• Number of Members: 4 (Julie, Natty, Belle, Haneul)

1. Julie (Leader, Rapper, Vocalist)

• Birth Name: Julie Han (줄리한)
• Birthday: March 29, 2000
• Age (Dec 2025): 25 years old
• Nationality: Korean-American
• Birthplace: Hawaii, United States
• Position: Leader, Main Rapper, Lead Vocalist
• Trivia: Julie trained for five years and was a trainee under The Black Label. She is known for her smooth, charismatic rapping style and bilingual skills, often acting as the group's main English speaker.

2. Natty (Main Dancer, Rapper, Vocalist)

• Birth Name: Ahnatchaya Suputhipong (아낫차야 수푸티퐁)
• Birthday: May 30, 2002
• Age (Dec 2025): 23 years old
• Nationality: Thai
• Birthplace: Bangkok, Thailand
• Position: Main Dancer, Lead Rapper, Sub Vocalist
• Trivia: Natty is one of the most recognizable faces in the group due to her extensive pre-debut history. She was a contestant on Mnet’s survival shows Sixteen (the show that formed TWICE) in 2015 and Idol School in 2017. She also debuted as a solo artist in 2020 before joining KIOF. Her journey is a testament to her perseverance and incredible talent.

3. Belle (Main Vocalist, Songwriter)

• Birth Name: Shim Hye Won (심혜원)
• Birthday: March 20, 2004
• Age (Dec 2025): 21 years old
• Nationality: Korean-American
• Birthplace: Seattle, Washington, United States
• Position: Main Vocalist, Producer, Songwriter
• Trivia: Belle possesses a powerful and distinct vocal tone, but her most notable contribution is her work as a songwriter and composer. She has writing credits for major K-pop artists, including LE SSERAFIM’s hit "Unforgiven" and songs for Miyeon of (G)I-DLE. Her father is the famous 90s singer Shim Shin.

4. Haneul (Vocalist, Maknae)

• Birth Name: Won Ha-neul (원하늘)
• Birthday: May 25, 2005
• Age (Dec 2025): 20 years old
• Nationality: Korean
• Birthplace: Suwon, South Korea
• Position: Lead Vocalist, Maknae (youngest member)
• Trivia: As the youngest member, Haneul provides a stable and clear vocal foundation for the group. She is known for her bright personality and strong stage presence despite her young age. She reportedly trained for only a year, making her quick debut a sign of her natural talent.

The Secret Weapon: How KIOF’s Pre-Debut History Built Topical Authority

A significant factor in KISS OF LIFE's immediate success and the high level of interest from K-pop fans is the group's composition, particularly the inclusion of members with established industry experience. This strategic move by S2 Entertainment has given the group a massive advantage in building what is known in SEO as 'topical authority'—being recognized as an expert or reliable source within their genre.

Natty’s Survival Show Saga: A Decade of Dedication

Natty’s journey is a compelling narrative of perseverance that resonates deeply with the K-pop community. Her participation in JYP Entertainment’s Sixteen in 2015, at the age of 13, introduced her to the public as an exceptionally gifted dancer. Though she didn't make the final lineup for TWICE, her talent was undeniable. She later competed on Idol School in 2017, the show that formed the group fromis_9, but again missed the final cut.

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This history means Natty brought a ready-made fanbase and a decade of experience to KISS OF LIFE. Fans view her debut with KIOF not just as a new group's launch, but as the long-awaited success story of a beloved veteran trainee. This pre-existing narrative immediately provided the group with a depth and emotional connection that most rookie groups lack.

Belle: The Songwriter Behind the Hits

Belle’s dual role as a powerful Main Vocalist and a recognized songwriter is another pillar of KIOF's authority. Before her debut, she was already an active composer and lyricist in the industry. Her credits include co-writing the title track "Unforgiven" for the globally famous girl group LE SSERAFIM, a song that topped charts and secured her a reputation as a musical prodigy.

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This behind-the-scenes experience allows KISS OF LIFE to be perceived as a group of genuine artists, not just performers. Belle's involvement in the group's own music production, including tracks on their mini albums, speaks volumes about their commitment to artistic integrity and control over their sound, which is a major draw for modern K-pop fans who value authenticity and self-production.

The KIOF Sound: Breaking the Mold and Recent Activities

KISS OF LIFE’s music style is often described as a blend of R&B, Hip-Hop, and Dance-Pop, characterized by a mature, confident, and unapologetically fierce concept. Their debut title track, "Shhh," immediately established a bold and distinct identity, moving away from the typical 'cute' or 'high-teen' concepts often seen in rookie girl groups. This creative direction has been a key driver of their viral success.

The Impact of "Midas Touch" and Global Expansion

The group’s subsequent comebacks, including the viral hit "Midas Touch," have solidified their place as a group with a unique and powerful sound. "Midas Touch" in particular showcased their ability to blend a retro, early-2000s R&B vibe with modern K-pop production, earning them critical acclaim and high placements on international charts.

In late 2025, KISS OF LIFE officially expanded their focus with a confirmed Japan debut in November. This move is a crucial step in their global strategy, aiming to replicate their Korean success in the lucrative Japanese market. The group has been actively promoting and engaging with their international fanbase, demonstrating S2 Entertainment's commitment to making KIOF a global phenomenon.

What’s Next for KISS OF LIFE in 2026?

Looking ahead to 2026, the trajectory for KISS OF LIFE remains steep and upward. Their consistent delivery of high-quality content, combined with the members' individual talents and established industry connections, positions them perfectly for continued growth. Fans can anticipate several key developments:

• World Tour: Following the successful Japan debut and the popularity of their latest releases, a full-scale world tour is highly probable, allowing them to connect with their massive international fanbase.
• Increased Self-Production: With Belle and Julie actively involved in writing and composing, future albums are expected to feature more self-produced tracks, further strengthening their artistic identity.
• Solo/Unit Activities: Given Natty’s solo history and the individual strengths of all four members, S2 Entertainment may explore unit or solo releases to showcase their distinct colors outside of the group format.

The members of KISS OF LIFE—Julie, Natty, Belle, and Haneul—are not just a girl group; they are a collective of seasoned talents who are reshaping the expectations for the fourth and fifth generations of K-pop. Their unstoppable rise is a must-watch for any music fan.