I want some manga with sexy, cool, heartless and harsh seme.
Any suggestions?

Sekai wa minikuidesu..shika shi! Yūjō, yūki, tsuyo-sa wa ikinokoranakereba narimasen..Tiruendo!

Totally Captivated
Viewfinder

I've read them already. Were soooo good 😀
Anything else?

Sekai wa minikuidesu..shika shi! Yūjō, yūki, tsuyo-sa wa ikinokoranakereba narimasen..Tiruendo!

Bi no Isu
Ore ni Koi Shite Dousunda (if 'wild' is included in the seme's description)
Ai no Kusabi
Rabbit Man, Tiger Man (not actually heartless, but seems so)
Okane ga Nai
Acid Flower
Taiyou no Romance (he literally wants to kill and EAT the uke, so...)
The Gospel

Thanks!
I've read most of them but the rest looks interesting 😀
And yeah wild is also included 😀 Seme from Ore ni Koi Shite Dousunda was just great!

Sekai wa minikuidesu..shika shi! Yūjō, yūki, tsuyo-sa wa ikinokoranakereba narimasen..Tiruendo!

You could try one of these:
Hitomi no Honne
Hitomi no Giwaku
Sasayaku no wa Sono Yubi
Kooru Shakunetsu

I have the simplest tastes. I am always satisfied with the best.

• Oscar Wilde -

yuuki456 What manga is your avatar from?

Kawaii Akuma and its sequel. They're quite hot too. 😛

Deep Bloody Night, a short story, but the art is eye candy.

Triski and Oriolidae:
Thanks guys but I've read all of them!
They were nice 😀
Yeah, Deep Bloody Night is soooooo hot! Love it 😀
Martuś:
It's from Heaven's Love by Shimotsuki Kairi (Read it, this one is really great!)

Sekai wa minikuidesu..shika shi! Yūjō, yūki, tsuyo-sa wa ikinokoranakereba narimasen..Tiruendo!

Not sure if they completely fit (sorry if they don't fit at all), but these came to mind:
Katekyo!
Cage (has incest)
Martini Kouryakuhou
Even if this is Love in Captivity
Deep Flower
Interval
Beautiful Beast (Chiharu is not really harsh/cruel to Kazuki; but he's heartless to everyone else)

Aside: do you also take ones with sexy, heartless uke? I forgot who the seme was in this one:
Welcome to the Chemistry LabShibaura & Kousuke

Thanks! I haven't seen Utsukushiki Kemonotachi yet, so I'll try it later 😃

Sekai wa minikuidesu..shika shi! Yūjō, yūki, tsuyo-sa wa ikinokoranakereba narimasen..Tiruendo!

Yongou x Keibi fits the bill.
Also, Leopard Hakusho
Tsumetai Kemono ni Kawarete
Kemono wa Ai de, Iyasareru and its prequels or sequels

Yongou x Keibi looks nice 🙂 Thanks!

Sekai wa minikuidesu..shika shi! Yūjō, yūki, tsuyo-sa wa ikinokoranakereba narimasen..Tiruendo!

Thanks yuuki456. I've read it before but I didn't recognize the art. Shame on me.

Quote from Martuś

Thanks yuuki456. I've read it before but I didn't recognize the art. Shame on me.

Tehe, you're welcome 😉

Sekai wa minikuidesu..shika shi! Yūjō, yūki, tsuyo-sa wa ikinokoranakereba narimasen..Tiruendo!