If you loved Towanoquon - Blutrote Angst, try Devilman: Die Geburt
Eine Brücke zwischen einem Film, den du schon gesehen hast, und einem, den kaum jemand kennt. Das teilen sie, und was der zweite macht, was der erste nicht macht.
Was sie teilen
Both films are directed by Umanosuke Iida, and they sit in Action / Animation / Fantasy territory. If that's the register that drew you to Towanoquon - Blutrote Angst, the second film will land in a comparable space — through a different lens.
What Devilman: Die Geburt is
Tokyo. Night. Distant sirens. A shy teen merges with a demon to save humanity. The process transforms him into a being of terrible power. One hopes his old friend Ryo knows what he's doing. Worth a look for fans of 80s anime horror.

