A short, fan-captured clip showing screens flooded with identical Blue Archive students wasn’t just clever editing—it sprang from a real incident the community dubbed “Koyukification.” Nexon confirmed the game was briefly compromised on August 31, with banners and cafés overrun by duplicate character models before servers were brought down for emergency maintenance. The publisher says no player accounts or payment data were affected.
What looked like a playful tech demo was, in practice, an exploit against the game’s content delivery settings. Reporting indicates an external change redirected certain client-side environment assets, producing mass on-screen duplication while leaving core gameplay data intact—hence the spectacular visuals without economy damage. Nexon outlined the cause and issued compensation after six hours of downtime.
Even so, Nexon is clear: using hacks, unauthorized programs, or modified clients violates operational policy and risks sanctions. The company reiterated strengthened monitoring and ToS enforcement following the incident.
Why it resonated: the clip showcased Blue Archive’s expressive animations and the community’s appetite for shared, whimsical moments—yet it also highlighted the uneasy line between fan creativity and live-service integrity.
The safest path forward is official channels only: no third-party tools in live environments, report vulnerabilities responsibly, and keep experimentation in sanctioned spaces if the developer ever offers them. (For policy details, see Nexon’s ToS.)
