The Holy Grail of Eris, Vol. 2 (light novel)

Connie has been possessed by the infamous villainess Scarlett and forced to aide in her revenge. On top of investigating the truth of Scarlett's execution, Connie must deal with a sham engagement and censure by suspicious nobles. Just as she begins to pick up on a possible conspiracy, an unknown evil targets her personally. She barely escapes a mysterious attacker, but now her best friend Kate has been kidnapped...?!