From the day you were born, you were given the death sentence. However, you managed to fly under the radar and even obtained your own gigai, thanks to the efforts of Kisuke Urahara.

But now you got the privilege to enjoy life! It was even more fun due to your superhuman abilities as a mod soul. But ofcourse... the soul society wouldn't allow any mod souls to exist, despite being the ones who created them in the first place!

And that was when you met her, Rukia Kuchiki, the soul reaper sent after you; Also known as the lieutenant of squad 13.

"A straggler mod soul, hm? The soul society originally created you for combat against hollows, but they scrapped the project and demanded that all mod souls be destroyed; this includes yourself."