SM vs. Starship – 5th Gen Girl Group War Begins!

March 2025 marks the beginning of an exciting new era for K-POP’s latest rookie girl groups!
SM Entertainment’s Hearts2Hearts and Starship Entertainment’s KiiiKiii debuted on the same day (with KiiiKiii releasing a pre-debut track), instantly capturing the attention of K-POP fans worldwide.
SM introduced its first girl group in 4 years and 6 months since aespa, while Starship unveiled its first girl group in 3 years and 4 months since IVE, making both debuts even more highly anticipated.
With distinct musical styles, marketing strategies, and debut promotions, these two groups are already making their mark in the 5th generation of K-POP girl groups. So, how do Hearts2Hearts and KiiiKiii compare? Let’s dive in and find out! 🚀✨


📌 1. Group Profile & Debut Strategy Comparison
Category | Hearts2Hearts (하츠투하츠) | KiiiKiii (키키) |
---|---|---|
Agency | SM Entertainment | Starship Entertainment |
Senior Groups | aespa, Girls’ Generation | IVE, SISTAR |
Debut Date | March 14, 2025 | March 24, 2025 (Pre-debut track release) |
Number of Members | 8 (Jiwoo, Carmen, Yuha, Stella, Jooeun, Aina, Ian, Yeon) | 5 (Jiyu, Isol, Sui, Haeum, Kiya) |
Debut Song | The Chase | I DO ME (Pre-debut track) |
Main Concept | Dreamy + Emotional + Mysterious Universe | Gen Z Vibes + Street Style + Free-Spirited Individuality |
Key Marketing Strategy | SM’s signature world-building + premium branding | Viral marketing via TikTok + multi-platform engagement |
🎬 2. Debut Promotion & Marketing Strategy Comparison

✅ Hearts2Hearts – SM’s Signature Branding with an Evolved Strategy
Hearts2Hearts leveraged SM Entertainment’s signature high-quality branding and traditional idol system to craft a well-structured debut promotion strategy.
- Debut Trailer Premiere at SM’s 30th Anniversary Concert
SM has a long-standing tradition of introducing rookie groups to fans ahead of their official debut.
At its 30th Anniversary Concert, SM unveiled Hearts2Hearts’ debut trailer, generating massive anticipation. - Simultaneous Member Reveal & Strengthened World-Building
Unlike SM’s previous approach of unveiling members one by one, Hearts2Hearts opted for a full-member reveal strategy.
Their dreamy and mystical concept was carefully crafted to captivate fans' curiosity. - Exclusive Content via YouTube’s Unlisted Feature
To enhance fan engagement, SM embedded a hidden unlisted link within teaser videos.
This link provided access to a self-filmed video, offering fans a more intimate look at the members’ natural and candid moments.
- Brand Collaborations & Merchandise Launch
Partnered with MUSINSA, a leading fashion platform, to reinforce a trendy, upscale image.
Collaborated with MegaMGC Coffee, offering special menu items curated by the members, creating unique fan experiences.
📌 Instagram: @hearts2hearts.official

✅ KiiiKiii – A Gen Z-Focused, Multi-Platform Viral Strategy
KiiiKiii adopted a bold, trend-driven debut strategy, placing a heavy emphasis on viral marketing and cross-platform engagement.
- Mystery Concept Teasing with Artistic Branding
Instead of traditional member reveals, KiiiKiii built anticipation through artistic, conceptual branding.
Collaborated with renowned artists, unveiling teaser images featuring abstract sculptures and unique artistic visuals. - Pre-Debut MV Release – A Disruptive Strategy
Prior to introducing the members, KiiiKiii surprised fans by dropping their pre-debut MV, ‘I DO ME’.
This unconventional move sparked instant buzz and landed the group on YouTube’s ‘Rising Videos’ chart. - Interactive Website & Gamified Fan Engagement
KiiiKiii launched an interactive ‘Jam Factory’ concept website, allowing fans to explore different sections tied to the group’s content.
Features included exclusive behind-the-scenes clips, lyric reveals, and even a styling game, immersing fans in the group’s identity. KiiiKiiiKiiiKiii
- Dominating Social Media & Short-Form Video Trends
Prioritized TikTok, Instagram Reels, and YouTube Shorts, capitalizing on the power of viral content.
Leveraged fan-driven challenges and real-time interactions, fostering an organic digital community.
📌 Instagram: @kiiikiii.official
📌 Official Website: kiiikiii.kr
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🎤 3. Music Style & Performance Comparison
✅ Hearts2Hearts – Ethereal & Story-Driven SM Pop
- The Chase features a dreamy synth-pop sound infused with a mystical atmosphere.
- Highlights emotionally charged melodies paired with powerful vocal performances.
- Builds a distinct concept rooted in SM’s signature storytelling and world-building.
✅ KiiiKiii – Bold & Gen Z-Inspired Pop Dance
- I DO ME delivers a message of self-confidence and individuality over an upbeat pop-dance rhythm.
- Features a bold, street-style performance reflecting strong personal expression.
- Choreography is designed for TikTok challenges, optimized for social media virality.
🔥 4. Debut Performance & Public Reception Comparison
Hearts2Hearts (H2H) | KiiiKiii | |
---|---|---|
Streaming Performance | Peaked at #80 on Melon | Peaked at #51 on Melon |
Music Video Views | Surpassed 10M views | Surpassed 7M views |
TikTok Challenge | 500K+ hashtag creations | 2M+ hashtag creations |
International Reception | Gaining popularity in Japan/China | Rising popularity on TikTok in North America/Europe |
🔥 5. SM vs. Starship – A Legacy Giant vs. A Rising Power
The competition between these two powerhouse agencies adds another exciting layer to the battle. SM Entertainment is one of the "Big 3" traditional K-POP giants alongside YG and JYP, while Starship Entertainment has rapidly emerged as a major player in recent years.
SM Entertainment | Starship Entertainment | |
---|---|---|
Founded | 1995 | 2008 |
Notable Artists | Girls’ Generation, Super Junior, SHINee, EXO, Red Velvet, NCT, aespa | SISTAR, MONSTA X, WJSN, CRAVITY, IVE |
Key Features | Traditional "polished idol" system, distinctive storytelling and world-building | Trendy marketing strategies, strong focus on global fandom growth |
Strengths | Strong brand heritage, systematic trainee program | TikTok & SNS-driven viral marketing |
Recent Success Stories | aespa, NCT, RIIZE | IVE, MONSTA X |
💡 SM is the pioneer of the K-POP idol system, while Starship has rapidly gained influence with its trend-driven strategies.
Starship, once known primarily for MONSTA X, skyrocketed in status with IVE’s massive global success. Now, they’re bold enough to debut a girl group alongside SM’s newest act, proving they’re ready to compete on a major scale.
While SM's dominance isn’t as untouchable as it once was, it remains a foundational pillar of the K-POP industry.


✅ SM’s Strengths
- ✔ Decades of expertise & structured idol training system – From Girls' Generation to EXO to aespa, SM consistently produces top-tier groups.
- ✔ Unique world-building & storytelling concepts – Each group is built around a distinct universe, setting them apart from competitors.
- ✔ High-quality music & performance production – SM’s in-house system ensures a high level of musical and stage quality.


✅ Starship’s Strengths
- ✔ Rapid global fandom expansion – IVE built an enormous overseas fanbase in just a year.
- ✔ Efficient marketing & viral strategies – Heavy use of TikTok, YouTube, and SNS engagement to connect with fans.
- ✔ Diverse musical concepts – From SISTAR’s bold & sexy image to IVE’s refined elegance, Starship is skilled at crafting fresh and appealing concepts.
👩🏻 Ajumma K’s Comment: As of March 10, 2025, neither group has officially debuted yet. Right now, KiiiKiii is making waves with its unique and mystical concept art and distinct group identity, while Hearts2Hearts is drawing attention for its pure and innocent "classic SM girl group" aesthetic.
✨ Which group’s concept excites you more? Drop your thoughts in the comments! 🎤💬
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