I would call this a reverse pervert anime. The girls are the perverts, whereas the guy, in comparison, is tame. The recommended audience would be for those who are looking for a blend of comedy that relies on perverted material as the main appeal, along with a blend of romance that serious, but the intentions are genuine. The idea is fairly straight forward, there are a handful of girls mostly lusting for the main guy. He himself is on a quest to try and find out who left a pair of panties with a love letter. As you can guess, this isn't for those that want something serious or with much in terms of a story, and can't have a totally innocent mind or you won't enjoy it, though now my mind is far less innocent after learning some of these new kinks.
The characters are mostly what makes or breaks it in my opinon, as each character has a very specific kink. There won't be any spoiler as to who is into what, but the hint is that these go beyond what you typically see, like maid/nurse/bunny outfits, though they aren't excluded. This is why most of the entertainment comes from it's characters, just seeing a potential relationship unfold, then wondering and waiting to see what the unusual quality is of that girl. As the title says, the girls seem to be aimed on the cutesy side, which made the kinks more surprising and funny.
The actual owner of the panties seemed fairly obvious within the first few episodes, so this wasn't a mystery. Trying to keep it as vague as possible, but with a fair warning, the resulting person might bother some viewers due to certain reasons, depending on your views and beliefs. The ending is played safe, but open to interpretation, going by the anime only, unless there is a Season 2 someday.
I found this to be very entertaining for the purpose it fills. The soft coloring and gentle music gave a really calming and cute vibe, and after a long day of work, I find that to be comforting, along with the laughs.
Make sure to watch the little scene after the credits on the 12th episode, it explains why the panties ended up with the letter.
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