I'm suggesting Rio: Ranbow Gate for you just to see how disappointing it was for everyone who saw at least an episode of it (myself included). Also, as of my post, it seems that it's a dangerous 6-way tie currently. The last thing you need is to hurt yourself while watching them all at the same time. :(
I voted Mouse, but I really disliked Master of Martial Hearts, also. Mouse is the worse of the two in my mind, though. Both of these series make "ecchi" un-fun, which for me is reprehensible. Rio Rainbow Gate isn't all that bad in my opinion since it can be enjoyed as kitsch (laugh at the stupidity of it all). Master of Martial Hearts was a trial to get through and I was pissed by the ending. Mouse was less a trial since each episode is only 10-15 minutes, but the farther I got into it the more I wanted to see some Lupin III or even Tantei Opera Milky Holmes to forget what I'd just watched. I don't usually speak harshly of most shows since I believe everyone has their own tastes, but these two push me to the edge.
I ended up voting for Kiss x Sis...never looked into it, but from what I hear, it is a terrible anime that is hard (yet somewhat funny) to watch. Not sure why I never looked into it...perhaps the whole stepsisters falling for their "new" brother thing reminded me of something you see in a H-manga.
Hey guys, I just wanted to clarify some things he mentioned to remove some uncertainties. Firstly, I will watch and review the runner up title in this poll, and since I suggested the secondary title, he got the option of laying out which title I would be watching in parallel as the 2nd watch.... It will also be reviewed.
Being that I put him up to the extra material, I figured it's a fair price...