You can /mostly/ avoid non-gay content.
There are a few female enemies (To my knowledge, four). Any of the three that beat you will result in female-based content, while if you beat them via fighting (and not teasing) there isn't any sexual scenarios involved.
It is otherwise non existent, and those four situations are very easy to deal with (One more or less stops showing up after awhile, one is a one-time boss, the third and fourth aren't terribly hard to beat up, although admittedly I had a high strength stat)