Trapped in a Dating Sim Where Every Route Ends in Tragedy

[There are free new bonus chapters in the author’s profile.] [This was written while I was still finding my feet, so the characters are pretty OOC. Read at your own risk...] After failing to reach a happy ending for the fifth time and having her affection points with the target character reduced to zero, Rina made peace with it. She came around and saw the light. She decided to pursue every kind of bad ending! Forget romance. I’m going to become a walking knife right here and now! And so. She traded her soul for Oda Sakunosuke’s life, then fell into darkness and became a witch right in front of a certain mud-loving man, unlocking the bad ending “The Mermaid’s Song”; She died painlessly before the mud-loving man could, infuriating him to death. She created a dream that covered the whole world for the sake of a certain curse king’s ideals, then died at his hands, unlocking the bad ending “Winter Flowers”; She criticized your ideals to your face, just to get under your skin. Hasegawa Rina went all out, focusing on being a walking knife. Yet, to her utter confusion, she gained affection points. Hasegawa Rina: ...? Hmph. How naive. I’m not stopping here. She “coldly” kept pursuing bad endings, determined to stab people where it hurt. Then she transmigrated. Hasegawa Rina: ... HEART! STOPPED! Somebody save me! I’ll never be a walking knife again, sob! #A love-triangle bloodbath caused by stabbing people where it hurts# #SOS, I’ve stabbed someone to the brink of madness. Do I have to pay their medical bills?# #Cute and sweet, not a thought in their heads# Everyone has one-sided feelings; OtoKou will be broken up, so beware. ※Open ending. The bonus chapters will settle on a 1v1 pairing. ※A crossover between Bungo Stray Dogs, Jujutsu Kaisen, and Madoka Magica. Theme: Help others, and you’ll receive the same kindness in return