Oh, no! I Became the Sister of the Novel's Tragic Heroine! - Chapter 647 - : Looking For Information

Kain may not have been very popular, and his life felt dull, but everything changed instantly. When he wasn't at work, he immersed himself in reading and watching anime. Then, the unexpected happened.He woke up in a new world, confronted by a blue interface hovering before him. Join the journey to see how Kain will adapt and thrive in this extraordinary reality.-No Harem- Noobie Writer.

Thrown back into the fragile body of her 15 year old self after a near death experience, Nnenna wakes up in a cold and loveless household, an adopted child meant only to keep the true child company.Rejected, ignored, and treated like a shadow, she had once quietly accepted her fate. But this time, things are different.Armed with a mysterious Love System, Nnenna gains the power to turn hate into love, one mission at a time all over the world.From mending broken friendships to healing hearts torn by betrayal, she earns “Good Points” that slowly transform the world around her.Yet, as her actions ripple outward, so do the echoes of her past life. Forgotten secrets resurface, her true origins, her parents' fates, and the shocking truth about those she left behind.Along her journey, two figures emerge from the haze of her past and present, a soul she thought she had lost forever and another who had been by her side all along.Both bring the promise of love, but will either of them earn her heart when she finally learns to love herself?With every mission, Nnenna discovers that love is a powerful force, not just for others but for the girl she’s becoming. But what happens when the cost of love threatens the second chance she’s fought so hard to build?

One morning, after being bound to the system, MC started his routine of always being captured/ attacked by the ML.

It doesn’t matter if he transmigrated into the ML’s little brother (TN: Here I think brother disciple) or master or opponent, but in the end he is still forcibly taken by the ML.

After transmigrating to many worlds:

MC: Come out system!!! The heck?! Why do these MLs not love their female goddesses, but insist on doing it with me! Aaaaahh!!!

System: …. __(:3」∠)_ Don’t ask me, I also don’t know.

- Description from Novelupdates

Waking up in the body of a 6-year-old boy a few years before Cintra is destroyed, Madara receives a system that gives him the ability to gain the powers of Uchiha Madara.[The peak of Uchiha Madara's system is before he becomes the ten-tails jinchuuriki.]The system's percentage does not stop Madara's power, but rather the system's release. After all, I don't want to see a character who goes around killing everyone from the beginning of the story.