Throughout preparation, one line kept coming up: this is the hardest thing we've taken on. 31 January to 1 February 2026, at KINTEX — the CookieRun: Kingdom 5th Anniversary Fan Festival, "Gathering of Fate." Joining an official Devsisters event as a cosplay crew was different in kind from the projects we'd done. We felt it from the moment talks began: the level being asked for was simply different.
What it means to wear a CookieRun character
CookieRun is an IP with a long-standing fanbase among Korean mobile games. The one we took on was CookieRun: Kingdom, and as the '5th' anniversary suggests, this was an event where fans who had loved that world for years came to KINTEX in person. Standing in front of those fans in character took more effort than we'd expected.
The gap between someone who has played a few times and a fan of several years is wider than you'd think. A slightly different color, one missing detail, and they notice immediately. So we went through the original artwork exceptionally carefully during preparation. Working with the costume shop, we checked repeatedly and matched every color, material and pattern. It wasn't a matter of adjusting off-the-shelf costumes — everything was custom-made from scratch, and the same went for wigs and props.
The fitting schedule was the tightest part
Once costume production begins, a fitting stage is essential midway. Only by putting it on the cosplayer can you see how the proportions and movement work. This time, though, we had to count backward from a fixed event date, and even arranging the fittings took a lot of coordination.
Thanks to the cosplayers' active involvement, the flow from production to fitting to alteration to final delivery held together. When the finished costumes finally arrived, that sense of achievement felt like: we really did it.
On site with a filming team
A separate filming team was brought in for this event, to record every moment as it happened. That was a new attempt for us too. Rather than simply standing there, the cosplayers became conscious of being filmed and paid more attention to their movement and expression.
Photo sessions with fans, standing in character around the booth — it was all captured. When we later watched the finished video, it had an appeal completely different from stills. It was as if the characters were alive and moving.
Two days at KINTEX
From the first day, 31 January, many CookieRun: Kingdom fans were lining up. We had worried, thinking most people attending would care deeply about the characters — so when someone looked at our cosplayers and said "they're exactly like the character," it felt tremendous. In that moment, the preparation, which had been anything but easy, flashed through our minds.
The photo session line didn't shrink across either day. It must have been exhausting, yet the cosplayers stayed in character until the end, and the atmosphere stayed good throughout. After the event we looked up the reviews posted in fan communities, and there were many mentions of the cosplay quality — everyone was delighted.
What this project left us
The official Devsisters event was a project where we had to raise our standards during preparation. Custom costume production, managing the fitting schedule, working with a filming team — several parts had to mesh at once, and if any one had slipped the whole would have wavered.
Thanks to this experience we confirmed once again what level of project we can carry. Above all, it was possible because everyone involved did their part well from where they stood.