That's basically the problem. Spawned in DB room. Have screenshots if needed.Special Note: This rule only applys to Naturally spawned Mini Bosses/MVPS, which means you can only KS Naturally spawned MVPS, not MVPS Spawned from Bloody Branches/skills.
In Order for the Mini Bosses/MVP's to become FFA they need to be untouched for generally 15-30 minutes, At that point the MVP becomes FFA.
Offenders:
Aigee
Shirayuki