The closest anime like Interspecies Reviewers depends on what you miss most: the fantasy setting, the monster girl angle, the shameless jokes, or the ecchi chaos. If you want the nearest overall match, start with Immoral Guild; if you want more monster girl variety, go to Monster Musume; if you want fan service with actual battles, High School DxD is the safer pick.

Best anime like Interspecies Reviewers
The easiest way to choose is to decide which part of Interspecies Reviewers mattered most to you. Some viewers want another fantasy world where species differences create the jokes. Others just want bold adult comedy, harem pressure, or a show that refuses to act embarrassed about its own premise.
- Closest overall feel: Immoral Guild
- Best monster girl focus: Monster Musume
- Best action-heavy option: High School DxD
- Best short-form ecchi chaos: Why the Hell Are You Here, Teacher!?
- Best extreme comedy detour: Prison School
If you are watching alone and mainly want something as shameless as possible, the stronger comedy picks make sense. If you want something easier to watch casually without every scene going for maximum shock, Monster Musume or Monster Girl Doctor will feel less intense.
Immoral Guild for fantasy ecchi comedy
Immoral Guild is the safest first stop because it keeps the fantasy-adventure setup close to the center of the comedy. Guild jobs, monster encounters, party mistakes, and awkward field missions regularly turn into ecchi disasters, so the fan service feels tied to the world rather than pasted on afterward.
The structure is not the same as Interspecies Reviewers. It follows recurring characters instead of a review-style format, but the mix of fantasy logic, embarrassment, monsters, and reckless jokes makes it the closest overall match.
Monster Musume for monster girl chaos
Pick Monster Musume if the creature variety was your favorite part. The show focuses on a human living with several monster girls, and the comedy comes from their different bodies, instincts, habits, and romantic pressure.
It is more domestic than adventurous, which changes the flavor quite a bit. Instead of moving from place to place, it builds chaos inside one household, making it better for viewers who want recurring monster girl characters rather than a rotating fantasy nightlife setup.
High School DxD for supernatural action
High School DxD works when you want ecchi comedy but do not want the story to stay purely episodic. It adds devils, angels, dragons, faction conflict, power growth, and battle arcs while still being very open about its fan-service-heavy identity.
This is the better choice for someone who enjoys the outrageous side of Interspecies Reviewers but also wants longer-term stakes. It is not the closest fantasy comedy match, but it gives you a more complete action-harem package.
Prison School for outrageous adult humor
Prison School drops the fantasy side completely, but it earns its place through sheer comic intensity. The humor is louder, harsher, and more humiliation-driven, with exaggerated reactions that turn small mistakes into full disasters.
Choose it when the boldness mattered more than the setting. Avoid it if you mainly want monster girls or playful fantasy world building, because this is a comedy detour rather than a direct genre match.
How these anime compare to Interspecies Reviewers

The main mistake is treating every ecchi or harem anime as a good follow-up. Interspecies Reviewers stands out because the fantasy races, adult jokes, and group banter all feed into the same idea. A show can match one of those parts and still feel very different.
| Best match point | Anime to try first | Where it differs |
|---|---|---|
| Monster girl variety | Monster Musume | More domestic and relationship-focused |
| Shameless adult jokes | Peter Grill and the Philosopher's Time | Narrower premise, less world exploration |
| Action and lore | High School DxD | More battles and long-running arcs |
| Softer fantasy species appeal | Monster Girl Doctor | Much gentler and less comedy-driven |
Best picks for different viewers
Your best pick should match the reason you clicked with Interspecies Reviewers, not just the fact that a show has fan service. A comedy-first viewer and an action-harem viewer will probably choose different series and both be right.
Immoral Guild for the closest overall match
Go with Immoral Guild when you want the fewest adjustments. It keeps the fantasy framework, the party-based comedy, the monster-related setups, and the ecchi punchlines close enough that it feels like a natural next watch.
Monster Musume for monster girl fans
Monster Musume is the better choice if you want character attachment with your monster girl chaos. It is less about sampling a fantasy world and more about watching a strange household become increasingly impossible to manage.
This works especially well if you prefer recurring romantic tension over one-off adult gags. It also feels easier to recommend when you want something playful rather than aggressively outrageous.
High School DxD for action fans
Action fans should start with High School DxD. The ecchi is still a major part of the identity, but the battles, powers, and supernatural politics give the show a stronger sense of progression.
If you usually get bored when a comedy resets every episode, this is the option most likely to hold your attention across multiple seasons.
Prison School for extreme comedy
Prison School is the "how far can this joke go?" option. It is not subtle, gentle, or fantasy-based, but it has the same commitment to turning embarrassment and desire into absurd set pieces.
- Best for: viewers who want louder, nastier comedy.
- Not ideal for: viewers mainly chasing monster girls.
- Watch mood: late-night comedy, not relaxed fantasy comfort.
Monster Girl Doctor for a softer watch
Monster Girl Doctor is the calmest recommendation here. It keeps the fantasy species interest but shifts the focus toward care, observation, and light intimacy rather than constant punchline escalation.
That makes it a good choice after a heavier or more extreme comedy. It will disappoint anyone looking for the same level of raunchiness, but it works if you want the creature-world side without as much chaos.

Conclusion
For the closest practical match, start with Immoral Guild; for monster girl variety, choose Monster Musume; for action and longer story arcs, pick High School DxD. Prison School is the best detour if you mainly want outrageous adult comedy, while Monster Girl Doctor is the gentler option when the fantasy species idea matters more than the shock value.