Mostly because they have too slow progression, too many cliffhangers, and too much Japanese.
Sounds like I am being pick, huh? Well whatever, let me begin the interesting task of glorifying this novel. (I mean reviewing)
The story is quite well known- the protagonist finds panties attached to a love letter; so he sets on a humorous quest to find the sender. The sender has been found a long time ago- in the anime, manga, and the novel. The story however, continues to introduce more and more people with different fetishes.
I really don't know how to rate art that doesn't exist except once in a chapter; so let's say... mediocore?
Just like the art, the character development doesn't really exist; most times their fetishes take over, and suddenly some time they are normal people.
I enjoyed this show overall.
"Entertaining, humorous, and light-hearted." Anybody else hear a nine in that phrase???!
