- Alternative Character Interpretation: Is Shiki gay, or is he treating Shuto as if he was a puppy?
- Ho Yay: The way Shiki acts around Shuuto could be seen as either flirting (which seems to be how Mirea takes it) or like how he treats small animals.
- Ensemble Darkhorse: The Jacky Combatants, full stop. Whilst Shuuto and JACKAL provide most of the drama and plot progression, the Jackies are collectively Funny Background Event, Crouching Moron, Hidden Badass, and Spotlight-Stealing Squad all in one.
- So much that many fans will comment on them being the true heroes of the story, especially how they were instrumental in breaking Ratman out of his strongest berserker state in the finale.
- Nightmare Fuel: Ratman's various more powerful forms (even just opening his mouth and revealing way too many sharp teeth) are not for the faint of heart. Rio has trouble sleeping after running into one of the tamer versions.
- Unchain killing and eating a hideous chimera...complete with way more blood and gore (and a loose eyeball!) than the manga had ever shown. Just...Unchain's eating habits.