I Broke the Timeline with My Cursed Technique

[Not a Power Fantasy, Focused on Growth, Brace Yourself for Relationship Angst] I never expected things to go so wrong after I expanded my domain. I ended up in a fantastical Shibuya in 2018, where a pink-haired guy in a familiar uniform shouted at me to get out. "Big sis, get out of there! Are you seriously going to fight Sukuna in this situation?" I stared at the man before me and sucked in a sharp breath. Then I thought it over. Maybe I could? I expanded my domain and summoned my younger brothers from parallel timelines, each a different age. Toji, my little brother from my own timeline, swore at me: "Get lost! Do I look like your summon?" * To make it up to my brother, I took him on a trip to Italy. That night, I saw a handsome Italian man shoot someone on the island of Sicily. The moment our eyes met, I used my technique to make a getaway. Unfortunately, I ran into him again the next day at an amusement park. The man came over and dropped a kiss on my lips. I thought he'd fallen for me at first sight. Who knew I was about to die? My brother, who'd come along on the trip, looked murderous and grabbed me by the collar. "Are you an idiot? That's a bacio della morte, the kiss of death!" In a panic, I used my technique and made us jump through time on the spot. * At a friend's invitation, I still went to Namimori. When I saw the baby sitting on a student's shoulder, I could barely breathe. He smiled at me. "Ciaos." Hahaha, it's you, little Sun of the healing type! ...Can I still use my technique to jump to another timeline, or is it too late? * It's already ridiculous, right? It gets even more ridiculous. One day, while using my technique, I accidentally snagged the wrong thread, and three men from three different parallel worlds appeared in my house at the same time. Together with the one I already knew, they surrounded me. "Take a guess. Which one of us is your Reborn?" ...Do you have to be this twisted? I gave up trying to fix things too, and let out a cold laugh. "Just four of you!" [Not a doting-big-sister story, not a strong-female-lead story, and not a power fantasy. The heroine's emotional struggles are angsty and bittersweet, with a focus on growth.] [OOC warning] 1. The timeline jumps around repeatedly. 2. No matter how the timeline changes, the heroine who uses the technique is always 19! 3. Cover art by @Maimai Crispy Potato Skin King on MHS, licensed for commercial use. The private commission is absolutely amazing, darling! Pre-registration on 24.6.6. The blurb and premise have both been filed with the editor. [Recommended works by friends]: · Jiu Zhi Mao, Escape from the Zenin Clan · Jiu Zhi Mao, You Started a Sports Anime RPG · Jin Li, The Gojo Family Head Insists on Marrying Me · Jin Li, My Cursed Technique Is Catnip And here are my own completed works: · I Use Sanskrit to Rule the Jujutsu World, pairing: Gojo. Familiar first-person narration, familiar flavor, OcO · Making Blades Can't Save the Jujutsu World, pairing: Geto Theme: Love