Isekai Nonbiri Nouka - Vol. 16 Ch. 311 - Beyond the Hidden Door (1)

[MangaDex]

 

[Zthulu]

Page 5, 1st textbox:

 

[CountryMage]

Love how his Secret Service (Spiderlings) and Royal Guard, scout out each room ahead of him.

 

[dowiet]

right before the explosions happen

 

[fight2live]

Frieren and Himmel would be stoked to find a hidden door