Based on what I'm seeing in this first chapter, this is a pretty pure dom/sub story. People who are into that will like it, people who aren't won't.
There's the surface level plot of "oh I want to get one over on her so she realizes she isn't so perfect and can have equal relationships with others" but the whole bets thing is just an excuse for them to do romantic DS stuff, both in and out of universe. I assume eventually Wakaba will realize "Hey wait a minute, I keep agreeing to bets that inevitably end with this hot girl ordering me around and making me kiss her and stuff, and that makes me feel good, what could this possibly mean?"
Anyway, I like the way they position the characters, with Komaki above Wakaba, wrapping her legs around her possessively. It was also a good choice to have Komaki be taller and fuller figured. I don't expect this to be an especially clever or original story, but they're getting the core appeal stuff right.