Bôkyaku no senritsu

are 3 words that come to mind with this anime...its not a bad anime, but I've seen plenty better, and at 24 episode length, it does feel overly long, but if u have the time to spare, u could give it a go...

its set in a dystopian future where humanity fought a war against monsters, and the monsters won...as time passed people forgot the war and the monsters leave humanity alone as long as they get a quota of child sacrifices...the only people fighting against this injustice are the Meros warriors, and no-one appreciates them upsetting the human-monster balance/alliance...

a young boy named Bocca becomes a Meros warrior and travels around fighting the monsters with help from other Meros warriors and their flying Ivermachines (mecha-type motorbikes)...

i originally watched this because i thought it was going to have plenty of action and be for a mature type audience, and while their is action, there isn't much blood or real violence and no nudity, but the overall themes are mature...the animation looks older than the show actually is, but the story is kind of engaging...its not bad but not great...