The plan is simple because simple plans survive contact with reality better than complicated ones.
Yeon Yujun has learned this across twenty years of going into places that didn't want him there and coming out again — sometimes barely, sometimes not the way he went in, but out. Simple. Fast. Adaptable.
Go in. Get to Song Dohyun. End it.
The facility in Gangnam has six confirmed guards at the exterior and an unknown number inside, a reinforced ground floor, and a basement that doesn't officially exist. Song Dohyun is in there voluntarily, which means the guards are there to stop people getting in, not to stop him getting out. That's a different kind of security. Simpler to work around.
"The guards rotate every ninety minutes," Han Ruby says, laying it out for the third time while Chae Yuna runs the approach angles on Ki Yeonbom's hologram. "The back entrance rotation overlaps with the northwest corner by four minutes. That's the window."
"Four minutes is enough," Chae Yuna says.
