Like the title says, I want a revenge-centered manga in which the MC actually goes thru with the planned killing. I want to see other characters trying to stop him with the logic that killing is bad, revenge brings nothing but revenge, etc.. and the MC is like, "yeah, whatever." and ignores them. I want an MC who wouldn't let other people hinder him, even if it's a potential love interest. I want an MC who wouldn't hesitate to kill those who try and get in his way even if they were friends or even the love interest.

I'm currently in a weird mood today, so I need some stress relief. Forgive me if I creep you out with this request, tho. 😐

Giniro no Kami no Arisa
Love SOS - Though for most of the manhwa the revenge is lost in the reverse harem drama
Fukushuu Kyoushitsu - Ongoing, but I don't think that she has actually killed anyone yet. People have died though. (But I've only read the first volume)
Ares - Unfortunately it takes almost all of the 26 volumes for him to get his revenge...

~4400 manga completed
~1700 ongoing...

Ubel Blatt

The ever popular
Code Geass
XD
Just in case haha

[color=violet]Tournament Round 1[/color]
[color=blue]Round 2[/color]
[img]http://i.imgur.com/CcwHreL.png[/img][img]http://i.imgur.com/aQ0E4sC.png[/img]

Don't worry. I like revenge stories where the person seeking rev eve never backs down from said revenge. I'd have to add to your request,
Are there any revenge stories with a female character who does not waver?

The count of montecristo there's a manga out there about this story, and then there's Gankotsuo.

Basilisk
Shin Angyo Onshi
Duds Hunt

I just caught up with Tsuki no Shizumu made which has elements of revenge and not backing down and death.