I'm not a huge Pentagon fan, but I like a few of their songs. I couldn't care less if Minpha was a pervert or not xD. Better a pervert than an uptight straight edge.
To me, Minpha is just a cute trap who can play bass pretty well. If I was more into Pentagon, I'd have a larger opinion.
Don't understand how ppl can think any vk artist is as innocent and cute as they act. A simple search on tumblr will show you line conversations of minpha sending dickpicks and begging for sex.