"I refuse to get caught up in a love triangle between my indecisive sister and these shy guys and end up ruined, so I'm backing out!"

I thought I had been reincarnated into the world of a shoujo manga I read in my previous life, but I turned out to be the "indecisive heroine, and the villainess older sister who gets caught up in a love triangle with two shy men and meets her downfall." —What? Where is my obligation to go along with such nonsense? My younger sister Cyra is extremely indecisive. My brother-in-law Viole is hopeless at confessing his feelings. My fiancé Campano only has eyes for my younger sister and is useless. I refuse to get caught up in this love triangle and be destroyed. Sorry, but I'm opting out!