A series of online "[[Cyberpunk]] [[Ninja]] Action" novels serialized on Twitter beginning in 2010. It has been adapted into three manga series. An anime adaptation by TRIGGER started airing in April 2015.

h4.Characters 

(There is "no consistent name order rule":http://wayback.archive.org/web/20151029065029/http://theinterviews.jp/njslyr/2254189 for the characters.)

* [[Fujikido Kenji]] -Ninja Slayer- 
* [[Dragon Yukano]] 
* [[Nancy Lee]] 
* [[Yamoto Koki]] 
* [[Alias Dictus]] 
* [[Takagi Gandou]] -Detective- 
* Kataoki -[[Silver Key]]- 
* Shoogoo Maguchi -[[Suicide (ninja slayer)|]]-
* [[Naraku Ninja]] 
* [[Yakuza Tengu]]

* [[Azure (ninja slayer)|]]
* [[Deathdrain]] 
* [[Dark Ninja]] (Fujio Katakura)
* [[Ignite]]
* [[Purple Tako]]
* [[Laomoto Khan]]

* [[Forest Sawatori]]
* [[Silver Karasu]]
* [[Genocide (ninja slayer)|]]

* [[Shikibe Takako]]
* [[Himeko (ninja_slayer)|]]

h4.External links

* English Official page: http://otakumode.com/sp/ninjaslayer 
** English serialization page: http://otakumode.com/sp/ninjaslayer/novel
* Official twitter account: https://twitter.com/NJSLYR 
** Datalog archive: http://twilog.org/njslyr 
* Wikipedia article: https://en.wikipedia.org/wiki/Ninja_Slayer

* Enterbrain's page : http://ninjaslayer.jp/ 
* Anime official page: http://www.ninjaslayer-animation.com/
* Comp Ace's manga adaptation ("Yogo Yuuki":https://ja.wikipedia.org/wiki/%E4%BD%99%E6%B9%96%E8%A3%95%E8%BC%9D ver.) promotional account: http://twitter.com/njslyr_ukiyoe

* Official fansite (Japanese): http://d.hatena.ne.jp/NinjaHeads/ 
* Fanmade wiki (Japanese): http://wikiwiki.jp/njslyr/
* Old English site: http://ninjaslayer.onlinewebshop.net/ 
* Mixi community: http://mixi.jp/view_community.pl?id=467346

* "Nicopedia":http://dic.nicovideo.jp/id/4773741 
** "NicoSeiga Tag search":http://seiga.nicovideo.jp/tag/%E3%83%8B%E3%83%B3%E3%82%B8%E3%83%A3%E3%82%B9%E3%83%AC%E3%82%A4%E3%83%A4%E3%83%BC?target=illust_all
ニンジャスレイヤー 忍殺 NINJASLAYER