@karzak In the last lifetime, he was able to tell she was a fake right away. We now know it was due to that scar that our MC didn't have and that fact that she recovered so quickly from the poison he gave her. Now that he saw the scar he is doubting his initial thought that she is a fake. Her mannerisms have also changed from the last life.
Uhhhh it was never said/shown that she knew it was a scar that made him realized that she's fake veronica...I think the panel is missing or the author/artist forgot about that small plot hole...
@purpleflowers123 in the last chapter or something where it showed them meeting for the first time, he checks behind her ear and realizes she's fake, so she made sure this time to add it
I've been wondering why she has to be substituted.
1. Sick
2. Pregnant
Hahahaha never expected she's actually poisoned in which i presume was done by this cousin.