So I need threads with ALL of my characters.
Yuyuko needs to learn about the spiritual world and its inhabitants. You can do that in any non-traumatizing or permanently scarring way you wish.
Rachael needs... I don't know, someone to bitch at? Possibly fight? She needs purpose, I just kind of made her for fun originally so you can do whatever you want with her. Again, non-traumatizing and non-scarring.
Minerva is 500 years old, has been a hollow the entire time, and just became an Arrancar about a year ago IC. She doesn't know what an Arrancar is. Or what a Shinigami is. Or an anything. Really it's the same situation with Yuyuko except this one's a hollow and she's... a bit more accepting to certain things. Again, non-traumatizing and/or scarring because I don't want any of my characters to go through hell.