Rebirth Deal: My Two Fiancés, Her Problem Now

"My younger sister, Sofia Moretti, and I grow up on milk. While our peers are showing no signs of growth, both of us are blessed with an early puberty.Our father, a mafia Don, is worried that we might get tricked into giving our bodies away to young men at an early age, so he has been nurturing two confidants for us when we were still kids.After we come of age, Dad makes each of us choose one as a fiancé.Sofia is the first one to pick Dante, the tall, well-built, and cold-looking older brother. The only choice I have left is Luca, the younger brother who has gotten partially disfigured by an enemy and often wakes up in fright due to the nightmares.In my previous life, I knew that once I rejected Luca, who had PTSD from his past, he'd definitely get kicked out of my family. No one would be able to protect him anymore. So, I took the initiative to accept the marriage proposal.Since Luca tended to jolt awake from his nightmares and tremble violently, I moved to the room next door so that I could guard his door at all times.Whenever Luca was insulted or mocked by my uncles and relatives at family meetings, I'd dig out my pistol and slap it onto the table to shut them up.I spent three years accompanying Luca to therapy sessions. That was how I learned to pick up on every symptom he exhibited before he went into his anxiety mode.I thought I'd be able to touch Luca's heart by offering him my own. But when an enemy family set up a trap that resulted in my and Sofia's kidnapping, they plunged poisonous blades through our stomachs and forced Luca to choose to only save one of us with an antidote. That was when Luca gave the antidote to Sofia without hesitation."Sorry, but Sofia needs the antidote more than you do."It turned out that Luca had been in love with Sofia this whole time.After Luca picked Sofia up and was about to leave, he murmured to me, "If there ever is a next lifetime, I'll use my life to pay this debt."My final memory of that lifetime consisted of the scorching pain that ate through my organs left behind by the poison.When I open my eyes again, I've returned to the day I'm supposed to pick out my fiance."