Defeat the Embryo soldiers invading the Keucereus Alliance Base and obtain the Proof of Ringleader.
Monsters to Hunt - Embryo Raider, Embryo Passionate Soldier, Embryo Guardian Captain, Embryo Elite Captain, Embryo Dark Wizard, Embryo Flame Master, Embryo High Priest, Embryo Archon, Embryo Soul Reaper, Embryo Slaughterer, Embryo Soul Pathfinder