You mean Koi to Senkyo to Chocolate ?
I think considering content, it's a lot better, if some other show, then I probably didn't watch it.
The things I like about this show is that it's actually covering a lot of stuff and he actually thinks about his sister and wants to find her, but the way they try to do it is completely weird. I lold at them getting topless just to "bring him back from the dark side" since in any other circumstance they will be too embarrassed to let him see their chests.
But the way things develop in this show is what makes me want to drop it, just as we get to something, it's being reversed. Timing is badly written, and I'm probably right about what she understood from his words. If so, this is just crap scripting, if she really is his sister, I had hoped for the mystery to keep going up, every other girl making him hornier than Makoto ever was, all the emotions getting pent up and all of a sudden, all girls know that one of them is his sister and were teasing him and at the very end his real sister is showed up, exposing the truth and the company snags her because he isn't the legitimate heir.
If it would be like this, the show would have been so much more interesting, but if the secret is really blown now. it lost it's best point.