I feel sorry for the main girl, main guy is so much of a creep who's clearly only after her body. My guess is that as a gyaru (either she's a rare less flashy type or he somehow thinks she is) she's facing prejudice from him, because the stereotype is that gyarus are easy; so the simple-minded MC propositions her every time they meet.
This is like anti-romance to me, MC is making me want to root for them never to be together.
Kinda hard to believe the Volume 2 cover art vs what we have now.