订阅以下载
Choujigen Game Neptune The Animation op2 (with sub th)

watch on youtube in HD
https://www.youtube.com/watch?v=hPMb436Xfuo&feature=youtu.be

Replaces intro to op neptune op2 (no square)in HD
To do this download GCFScape
http://nemesis.thewavelength.net/files/files/gcfscape185.exe
install it and open this file in C\ProgramFiles(x86)\steam\steamapps\common\left 4 dead 2\left4dead2\addons\workshop
open with GCFScape and drag floder name"media" to C:\Program Files (x86)\steam\steamapps\common\left 4 dead 2\left4dead2
if it ask just cick yes or yes to all
i am sorry for sub if you not like
you can use it to l4d2 background by rename it to
l4d2_background01

op with no sub by Ene (other made)
http://steamcommunity.com/sharedfiles/filedetails/?id=188623717]