Overview
Box Monster (小箱怪) is one of the 13 hidden rare spirits in Roco Kingdom: World. Unlike most hidden spirits that trigger from a statue throw, Box Monster requires the player's overworld star magic.
How to Obtain
Teleport to the Sanctuary Outpost Magic Source (圣所前哨魔力之源).
Locate the concealed box next to the teleport point.
Use star magic on the box. Box Monster reveals itself.
Capture with any Gulu Ball.
Tips
Star magic is unlocked through the world magic progression system. If the action is greyed out, keep progressing until star magic is available.
Only one of the boxes is the disguise. The star magic animation plays on the correct box.
See Also
Magic System - unlocking star magic
Hidden Secrets and Collectibles - full hidden spirit list