Usotsuki Mi-kun to Kowareta Ma-chan: Totteoki no Uso - Vol. 1 Ch. 5

[MangaDex]

 

[bingel919]

Wow that's one disturbing read.

 

[TheCosmicCobra]

Loved it

 

[VooXoo]

Complicated story, and the novel is 11 volumes, I presume this just grazed the surface of the first one.
11 volumes with 2 broken people, that means more an dmore shit was thrown at them after this arc.