Lost on the path of life

You're a few years younger than Minato's team, a bubbly, loud and ambitious kunoichi on her path to greatness! Your dream is to defeat Obito (in your mind, the greatest ninja in the world) and steal his hokage title, so you challenge him to spar all the time and always end up roughed up. However, you're the #2 student, and manage to make team with #1 student in you class, Shisui Uchiha. Your heart starts beating for these broken boys in ways you didn't expect and, when one by one they start disappearing from your life, you get lost on the path of life.
In this scenario, Obito comes back, Rin doesn't die, and Tobi is replaced by someone else.

This is a reader x shisui x obito x kakashi that I wanted to have fluff and smut, but it turns out that I like to torture my characters and make them suffer and cry, oops? If you, like me, think bitter sweet is better than straight up sweet, then this rollercoaster might be for you.