im going to have to agree with Vampire Juujikai. it has alot of plot twists

Try to read josei & seinen

Seconded
Hakomari
Melo Holic
Vampire Juujikai
Tower of God
Those four are a must read

I recommend
7 Seeds
Ran to Haiiro no Sekai
Kubera
Kamisama no Memochou (Novel)
Watashitachi no Shiawase na Jikan

everything here is completely scantalated, so feel free to read them

Homunculus heads up, the protag have quite a disgusting habit. but the story is very interesting.

Marie no Kanaderu Ongaku only 2 volumes, but the twist at the end is so mind blowing.

Nijigahara Holograph theres alot of layers upon layers of time and space, read carefully.

Freesia quite straightforward, but i think the end is quite surprising

Bradherley no Basha quite a depressing story. i wont say it is mind-boggling, the plot is simple but it is the characters that are quite unpredictable.

Fire Candy fairly predictable until the end where you would go like WHAT.....

Coo no Sekai Dream world, but not a good dream.

Ryuuguuden a crazy, crazy story, such simple art but a lot of twist and turns.

do try them, they are really good!

the voynich hotel - just a random story, funny but dark, heaps of shit happens

So many people beat me to Vampire Juujikai t-t

Is this me in a nutshell?
Pretty much.
[img]http://www.dragonflycave.com/wpay/ninetales.gif[/img]

Mm, Fullmetal Alchemist? 😐

I second Fullmetal Alchemist.

Well, Cheese in the Trap is rather unpredictable to me.
100% Perfect Girl - Though some parts are predictable, there're lots of twist and turns.
Coelacanth - Seriously, I just can't guess it until the very end!
Flowers of Evil - I'm rather surprised by the ending.
Ghost Hunt - Well, there are times during the cases.
Kanojo no Namida ga Yuki da Toshitara - It's quite unpredictable too, the ending was not what I thought it'd be.
Kareshi Kanojo no Jijou - Definitely!
Tantei Gakuen Q - Yep yep.
Six Half - Totally.

"A Lady Needs Time To Prepare. Even If It Takes A Year, A Gentlemen Must Wait." ~ Wilhelm Mölders(Emma)