This is WAY underrated and I'm quite shocked of the current low rate. If you love 80's anime and Z rated movies , this is like a concentrated juice of everything. It never disappoint. You got demons, fights, violence, tentacles, college romance, spaceship, 3meters teddy bear fighting, metal armor tokusatsu and so on. It never stops. And animation production is excellent. Really talented animators worked hard on this i can't believe it is 1987 ova. Do not expect any deepness to it this is pure raw anime enjoyment. I enoyed a huge lot discovering it. You must be born before 1990 to truly enjoy it still.