Zense wa Kentei. Konjou Kuzu Ouji - Vol. 3 Ch. 17 - The Wealthy Merchant

[MangaDex]

 

[Kaarme]

Since the dagger was made with blood magic, I imagine Fai can actually tell where it is, at all times.

 

[colorlesseatstomboys]

Ugh, those past flashbacks hurt so much.
Will some of them somehow return? Guess not since they did have their happy end by protecting Fai.
Though I kinda have a scenario of how this manga should end, that would be truly peak.