I've tried googling variations upon Bulgarian/Russian/Slavic diminutive names, nick names, etc, but I can't seem to find exactly what I want.
I need a nickname that a close relative (sister/cousin) might use for Viktor. I'd prefer a diminutive version of the name, but something playful that his female cousin who considers him a friend might use would be fine as well. Not something incredibly fluffy (she's a bit of a stern one) but something fond. She actually grew up in Albania, but she would know some Russian and some Bulgarian because of her father and her schooling.
Thanks in advance for any help you can give me!