RPGM Completed Ambrosia [v1.07] [Shimobashira Workshop / Kagura Games]

[rikitoy]

Anyone got a save for just before doing noir's shrine maiden story?

 

[alibaba34]

Is there a secret boss in the abandoned mine at night?

 

[Goeffel]

yes, an orc warrior king, or some such.

This one drops (directly) a much-desired material (maybe "fighting spirit ruby"?), but only sometimes/ randomly.
Enter mines, east, east, north - in this map, at the eastern end is a small cave with the boss.