Lily C.A.T.

Both are criminally underrated 80s sci-fi horror anime. In both mysterious things happen onboard a space craft with a lot of murders as a hidden threat takes out the crew one by one. Very similar tone and pacing, though the developments are very different. Both anime feature a paranoid and frightened crew as they deal with an unknown danger, really good stuff, and if you enjoyed one you'll likely enjoy the other. 

The series are space opera which fall into the horror category, leaving the viewer on edge the entire time as the vacuum of space and what might happen holds its own level of horror in additions to the horrors which wait inside the places which are supposed to be safe. 

Oldschool body horror OVAs for those who enjoy some blood and guts. Lily CAT is lower on violence than Genocyber, but it actually has a good plot. 

Both are criminally underrated pre-2000 sci-fi horror anime. In both mysterious things happen onboard a space craft with a lot of murders as a hidden threat takes out the crew one by one. Injuu Alien is a pinku (story-based hentai), lots of tentacle rape. Lily C.A.T. is far less explicit. Both anime have very similar plots and stories, and the same sense of old-school sci-fi horror. They're both from different generations, Injuu Alien from the 90s and Roots Search from the 80s. Lily C.A.T. is more slow and steady, whereas Injuu Alien is more fast-paced, but if you liked one (and are open to hentai) then check out the other. read more 

What does the future hold? Both plots invoke the idea that we can’t possibly know what the distant future holds, yet there is also a dark side to moving forward with technology, something both dive into. 

Though a far more successful movie, Akira shares an image of dystopian future in the face of an overwhelming unknown force. Stuck in one space, facing off against a power beyond imagining, a small group tries to rebel and overcome to return to safety. Unfortunately, few survive, slowly picked off, leaving the remaining members to take up the slack the others leave behind. It becomes increasingly a losing battle, the core cast coming to their final solution, somehow defeating their enemy, but at what cost. The ultimate conclusion is left open. What does the future hold?