Kokushibo boss rewards in Weak Legacy 2 appear to start at level 100 for the boss encounter itself, based on boss guide listings that place Kokushibo as an Upper Moon 1 world boss with a level 100 unlock requirement.

For the reward/quest requirement , some guides are less clear and list Kokushibo-related quest level as “???” , while Moon Breathing V2 guides say you need level 200+ to take the Kokushibo-related V2 quest.

Practical answer

  • To fight Kokushibo: level 100.
  • To use Kokushibo for Moon Breathing V2 progression: level 200+.
  • If you mean a specific drop or reward threshold: public guides do not give a single confirmed level for every Kokushibo reward, only the encounter unlock and related quest requirements.

Quick takeaway

If you just want the boss reward access, the safest answer is level 100+ ; if you mean the Moon V2 quest tied to Kokushibo, aim for level 200+.