Dungeon ni Hisomu Yandere na Kanojo ni Ore wa Nando mo Korosareru - Vol. 5 Ch. 22

[namecantbebl0nk]

Why puppet sword know he lied? Any context of this?

If you read the manga, you'll see he looks repulsed by her face at first. Then there's that pause and slight frown before he answers her question. You can read the manga here.

 

[TNT261]

Eh, I guess that's one way to continue the story. It'd be nice for the MC if he could bust out of the dungeon with all three girls. He seems lonely. He could do with some happiness. Too bad Ahega is... Ahega.