Am I a Saint? No, I'm a Villainess!: Therefore, I Shall Have the Honor of Preventing This TPK

Am I the Saint? No, I'm the Villainess! / Watashi ga Seijo? Iie, Akuyaku Reijou desu! / / / Watashi ga Seijo? Iie, Akuyaku Reijou desu!: Nanode, Zenin Hametsu wa Soshisasete Itadakimasu / Me, a Saint? Nay, I Am a Villainess! / Am I a Saint? No, I'm a Villainess! / Me, a Saint? Nay, I Am a Villainess!: Therefore, I Shall Have the Honor of Preventing This TPK / Vilaine malgr moi! / Me, a Saint? Nay, I am a Villainess! ~Therefore, I shall have the honor of preventing this TPK~ After waking up from a nightmare, Iris realized she was the Villainess in an otome Game. But in the game, all of the love interests had a hidden abnormal way of loving, so no matter which one you went after, you'd have a Happy Bad Ending. And in the worst case scenario, the royal castle goes up in flames...and if you didn't capture the heart of any love interest, the Villainess Iris would stab the Heroine..?! But she refuses the idea of such a future, therefore she'll take it upon herself to prevent her ruin and Happy Bad Ending!