Sakura Yamada is Satoshi Kanemaru's girlfriend and Spider-Wolf's partner.

Sakura Yamada is a chemistry expert at Gijutsu Academy (and also the most popular girl there).

Sakura Kunoichi is, you guessed it, a kunoichi (a female ninja) who fights alongside Spider-Wolf. Her fighting style is very similar to Kunimitsu from Tekken.

By the way, I'm currently working on an origin story about my main Sonic OC, Spider-Wolf on quotev.com. (I'm not going to tell you, because I want it to be a surprise)

#spider_wolf