The "spray skill" goes up if you use the spray cans. But in the current version it has no effect.How do you get better at fighting? Aside from taking dance lessons and wearing heels. I see there's a couple new "weapon" skills, but one's nothing but question marks and the other I have no idea how to recharge pepper sprays to build up
Additional to the other hints above:
Science is very important. It helps you cope with pain.
Over time you can acquire traits which help in combat. Especially Masochism/Sadism. (You can have both!)
High lewd skills allow you to bite where it hurts. (very effective! especially with fangs!)
In general you have to learn when to fight and when not.
Some opponents can be beaten easily.
Some need some extra pepper.
Some cannot be beaten even with 6 spray cans and a big body. It's better to apologize and suffer the harassment.
A good strategy for stronger opponents: Apologize first, bring your teeth in position, and then go all-in, bite+kick+punch+spray.