Do Even the Extras Turn Dark in a Failed Dating Sim?

'''I have experience playing the game, so building affection should be a piece of cake— [Warning! Intelligence is too low to respond!] Then, the skills first… [Congratulations! You have acquired the title ‘Mouth of Calamity’!] Are you kidding me? A total of minus 200 in stats holds me back at every single turn. But then, I meet an extra who is the only one unaffected by stats, and he becomes my lifeline… “Try seducing me too, Lucy.” Wait, why has he turned dark?'''