Hitoribocchi no Isekai Kouryaku - Vol. 8 Ch. 86 - The Ideal of a Highschool Boy?

[MangaDex]

 

[Xeroxcopy4free]

extra from official

 

[enrajb]

It doesn't make sense. Why not just make it a normal wall with a door/"secret passageway" that only opens for people with passes? What happens when baddies pretend to be merchants and children? What if they just steal passes?