It's a charming and somewhat eccentric show. It's also magical. There's a stone cat that grants wishes. It'll take away personality traits you decided on a whim that you didn't want. It can destroy the world and turn back time. It can possess a rabbit. Fortunately, though, it's not evil and will happily cancel wishes if the victim thinks of doing so. More than once, the problem is that wishes can overlap and so detective work is required to tell who brought about the latest reality-twisting.
The show's whimsical in other ways too. Characters might occasionally grow cat or dog tails, according to personality type. Names are always alliterative. The Steel King is stupid beyond plausible limits, although also funny. (She reminds me of Akari Acura from Chaika: The Coffin Princess, since both are big, strong and deadly serious about everything, but also nutjobs. The outrageous things they say are twice as funny because they're said in such a macho tone.)
It's based on a light novel, i.e. one male protagonist and a female cast/harem. Fortunately, it's one of the good ones and the relationships all work. Our heroes are:
YOKODERA YOUTO = earns the name "hentai prince" after wishing he could be more honest. Result: he starts saying exactly what's on his mind at all times, in public. He does indeed love porn, swimsuits, etc. but is also such a cheerful, light-hearted jester that for once you can see what all these girls see in him. Sometimes talks magnificent rubbish.
TSUTSUKAKUSHI TSUKIKO (cat) = thought her facial expressions were childish, so she wished them away. Now, she has a blank expression at all times and never varies her tone of voice. (The voice actress does a lot to make her expressive anyway, although Tsukiko not-screaming "Kyaaaa" is extremely funny.) She does a cute kitchen dance in ep.6. It's fun to see the gap between her wooden front and her often very obvious motivations.
TSUTSUKAKUSHI TSUKUSHI = aka. the Steel King. She's the most extraordinary element of a show that also has a stone cat grants wishes. I love her.
AZUKI AZUSA (dog) = a tsundere with fairly deep-rooted issues. It's a shame that Tsukiko's clearly fated to win the Youko Race, since Azusa's thoroughly likeable too. (She can also identify people by smell. "You've been using her shampoo!")
Oh, and another occasional comedy highlight is Maimaki Mai, the vice-president of the school athletics club and Youto's mortal enemy. "You're still alive, pervert? Go die already. Don't come to practice for a while. No, forever. You shouldn't have been born."
This is a light-hearted series, unsurprisingly, although it has a strong ending. No one could be called genre-savvy. Their decisions aren't always the best, especially regarding wishes. "May I become a new me." Oh dear. However, the show works. It's funny, I liked the cast and I enjoyed its magical quirkiness.