I know earlier I used 'Y/N' to mention my female character's name but now I changed it and gave her an actual name which will be 'Karen'.

Karen is an orphan hence she does not have a last name/surname and so, not going to mention her last name/surname.

My female character's name is Karen
Her villain name is Tora
And the nickname Shoto gave her is Sapphire.

I hope this won't be very confusing now.

***