Old manga works by CrimsonRed, let me know if im missing out any works
Works included:
1. Nina
2. Foxy
3. Kiss of death
4. Squad
5. Ninja battle
6. Bunny war
7. Shootout in space tunnel
8. Storage assault
9. School girls war
10. Random Space shooting
11. Samurai attack
12. Corporate values

Support artist here:
https://www.pixiv.net/en/users/1699089
https://crimson-red.fanbox.cc/
https://battlezakos.gumroad.com/

I think CrimsonRed is one of the greatest guro artists, though some works are too bloody for my taste. Do support him if you can or wish to!