Manta Acquires Kadokawa and Square Enix Catalogs as Webtoon Apps Pivot to Manga Aggregation

TOKYO / SEOUL — South Korean digital comic platform Manta, operated by RIDI Corporation, has executed worldwide licensing agreements with Kadokawa Corporation (TSE: 9468) and Square Enix Inc. (via its global digital arm, Manga UP!). The agreements add over 300 Japanese manga titles—including The Apothecary Diaries, Hiromu Arakawa’s Daemons of the Shadow Realm, and Tokyo Ravens—directly into Manta’s digital storefront. The expansion follows Manta’s initial April 2026 integration of Kodansha’s catalog, completing a strategic shift from its founding model as an exclusive, full-color vertical webtoon platform. Facing rising user acquisition costs (CAC) and post-pandemic plateauing in Western webcomic reader growth, Manta’s adoption of black-and-white Japanese manga catalogs marks the broader structural conversion of South Korean webtoon apps into generalized Asian comic aggregators to sustain Average Revenue Per Paying User (ARPPU).

• Primary Source: [RIDI Corp / Manta Press Release / MarketScreener ID: ce785bdbd080f32d]
• Disclosed Mechanics: 300+ Japanese manga titles licensed non-exclusively across Kadokawa, Square Enix, and Manga UP! catalogs; 30% promotional discount; multi-format integration (webtoons, webnovels, B&W manga)
• Supply-Chain Signal: Pure-play webtoon platforms pivoting to hybrid aggregation models to absorb high platform CAC by monetizing established, high-intent Japanese manga IP

RASTERWIRE DESK NOTE: THE STRUCTURAL DECLINE OF PURE-PLAY WEBTOON PLATFORMS

Classification: Digital Publishing / Platform Economics Cross-Reference: RIDI Corp, Kakao Entertainment (Tapas), Naver (WEBTOON)

┌────────────────────────────────────────────────────────────────────────┐
│            WEBTOON PLATFORM EVOLUTION: FROM DISRUPTOR TO AGGREGATOR    │
├────────────────────────────────────────────────────────────────────────┤
│ PHASE 1: PURE-PLAY WEBTOON MODEL (2020–2023)                          │
│ • Full-color, vertical-scroll, proprietary studio production           │
│ • Subscription or episode-coin paywalls (Wait-Until-Free)              │
│ • Heavy performance marketing expenditure to acquire Western readers   │
│                                │                                       │
│                                ▼                                       │
│ PHASE 2: CAC COMPRESSION & CONTENT DECAY (2024–2025)                   │
│ • Production assembly-line costs surge; hit-rate decay accelerates     │
│ • Ad-spend returns diminish as mobile marketing costs jump post-ATT    │
│ • Pure-play subscription models cap ARPU on casual audiences           │
│                                │                                       │
│                                ▼                                       │
│ PHASE 3: HYBRID MANGA AGGREGATION (2026 PRESENT)                      │
│ • Platform surrenders format exclusivity; opens rails to Japanese B&W  │
│ • Kadokawa, Square Enix, Kodansha extract high-margin licensing fees   │
│ • Webtoon app functions as secondary storefront for legacy manga IP    │
└────────────────────────────────────────────────────────────────────────┘

1. The Webtoon Unit Economic Squeeze

The original pitch for platforms like Manta (RIDI), Tapas (Kakao), and Webtoon (Naver) relied on controlling the entire vertical pipeline: funding internal Korean production houses (studio systems), publishing full-color vertical-scroll comics, and monetizing via subscription tiers or coin-unlock paywalls. However, full-color assembly-line production is capital intensive. When user growth stalled in North America and Europe, high operational burn rates clashed with declining lifetime value (LTV).

2. Japanese Publishers Retain Channel Power

Unlike early digital music or streaming wars where platforms forced exclusive windowing, Japanese publishers (Kadokawa, Square Enix, Kodansha) have systematically avoided granting distribution exclusivity to South Korean tech platforms. Square Enix operates its own direct-to-consumer storefront (Manga UP!), yet seamlessly licenses The Apothecary Diaries and Daemons of the Shadow Realm to Manta on a non-exclusive basis. Japanese IP owners treat Manta not as a disruptive competitor, but as an auxiliary, low-overhead distribution channel that pays licensing fees while absorbing its own storefront operating costs.

3. Format Capitulation & Storefront Utility

By integrating black-and-white, right-to-left traditional manga, Manta effectively concedes that “vertical scroll” is a UI format preference rather than a distinct competitive moat. To survive high App Store/Google Play commission fees (15–30%) and elevated ad-acquisition costs, platforms must maximize transaction frequency. Transitioning from a boutique webtoon app into a generalized digital manga bookstore allows Manta to cross-sell established, highly searched Japanese franchises to users who originally installed the app for webcomics—turning a single-purpose reader into a multi-format digital storefront.