Frequent combat with energy weapons, explosions, and monsters (the "Unknown"). There's some destruction and injury implication, but minimal blood or graphic detail. The violence is stylized, not gruesome.

Occasional light language or irritated remarks typical of action anime, but no strong profanity. English dubs may use minor expletives for tone, but Japanese audio stays clean.

No depiction of alcohol use, drug references, or smoking across the series.

The series includes frequent large-scale battles, destruction, and moments of tension when characters are in serious danger. Some scenes near the latter half carry emotional or psychological intensity as hidden truths surface. However, there's no horror imagery or prolonged distress - it's dramatic, not terrifying.