The Female Lead Says, As Long As I'm Alive, That's Enough

It's the year 2202. Are there really still heroines who transmigrate without a guide, a cheat, or stunning beauty?! Poor Sachi slowly raised her hand. "Fine, I transmigrated, and I don't have a cheat. But you sent me to the Hunter world and gave me a tragic backstory, with flags planted all over me. How am I supposed to survive?!" Hey, hey, silver-haired kid over there, I remember you're the protagonist. Sachi's eyes lit up. Stick with the protagonist, and you can survive! It'd be even better if she could find her brother along the way. Reader's Guide: 1. The male lead is Killua Zoldyck. The other three beauties also have their moments. 2. The background worlds are Fate and Bungo Stray Dogs. 3. Here's to Togashi finally resuming serialization!!!! Theme: There are too many weirdos. Just staying alive is good enough.