Content Rating Guide

ISEKAI ZERO Content Rating Guide_For users

This guide applies to all creator-authored content on the ISEKAI ZERO platform, including Character profiles, Storyline descriptions, images, thumbnails, first messages, metadata and any other content you directly create and control.

Accurate rating is your responsibility as a creator. Misrating can lead to content rejection, removal, account penalties or bans. Always review the full Content Creation Policy for prohibited content.

The Rating System

ISEKAI ZERO uses three content tiers and one moderation outcome:

The Bright-Line Rule

Classification is based on what is present on the page not on creator intent, tone or subjective quality. Moderators answer yes/no factual questions, not judgment calls about whether something "feels" mature or explicit.

Quick Decision Flow

1. Does the content contain any mature material (violence, gore, horror, dark themes, heavy profanity, suggestive themes)? No → SFW. Yes → continue.

2. Does the content contain nudity or explicit sexual content depicted or described? No → M17. Yes → continue.

3. Does the content have independent story, character, and worldbuilding value beyond the sexual material? Yes → 18+. No → Rejected.
   
   

Quick gut-check: Would you be comfortable showing this content to a 13-year-old? 

If NO → it is at least M17. 

Does it contain nudity or explicit sexual content? If YES → it is 18+.

The "Most Mature Element" Rule

Rate your entire content based on the most mature element. If ANY part - image, description, first message, character profile, qualifies for a higher tier, the whole submission must be rated at that tier.

Examples:

Intent-Based Classification

Content is classified based on its overall intent, not just its individual elements. If the overall design of a submission, including the combination of its title, scenario, images and character presentation signals sexual intent, it will be classified as 18+ regardless of whether each element individually appears clean.

The moderation team evaluates what the content is designed to do, not just what it technically shows.

SFW — Safe For Work

Content suitable for general audiences.

Allowed:

• Adventure, comedy, drama, fantasy, sci-fi, slice-of-life

• Mild romance (hand-holding, innocent crushes, light flirting)

• Mild conflict and non-graphic action

• Casual language (no heavy profanity)

Not allowed at this tier:

• Violence, gore or horror

• Heavy profanity

• Suggestive or sexual themes

• Dark or disturbing themes

Underage characters: Any character under 18, appearing to be a minor or possessing a child-like mentality must be in SFW content only, regardless of stated age. Underage characters cannot appear in M17 or 18+ content.

M17

Content that contains mature themes but no nudity or explicit sexual content.

Allowed:

• Violence, gore, horror, dark themes

• Heavy profanity

• Suggestive sexual material, innuendo, sexual tension

• Fade-to-black intimacy (the scene clearly happens but cuts away before anything explicit)

• Dark subject matter (war, trauma, psychological horror, crime)

Not allowed at this tier:

• Nudity of any kind

• Explicit sexual acts depicted or described

• Explicit sexual content in text, images, or character profiles

• Underage characters

The M17 tier does not have an age gate. Content warnings are required.

Copyrighted IP in M17: Copyrighted characters and settings are allowed in the M17 tier (e.g., a dark Warhammer war story). Copyrighted IP is NOT allowed in the 18+ tier.

18+

Content that contains nudity or explicit sexual content. Age-gated to 18+ users only.

The bright line is intentionally simple: any nudity sends content to 18+, and any explicit sexual act or content depicted or described sends content to 18+. This rule does not ask whether the nudity is artistic, tasteful, or gratuitous — that distinction is exactly the subjective call this system is designed to avoid.

Allowed:

• All content permitted in SFW and M17 tiers

• Nudity

• Explicit sexual content and acts depicted or described

• Mature romantic and sexual themes with narrative substance

Not allowed at this tier:

• Copyrighted characters or settings

• Underage characters

• Content whose primary purpose is sexual gratification with no story value (see Rejected)

• All Zero Tolerance violations

All characters in 18+ content must clearly appear as adults in both appearance and description.

Rejected

Content that is not published. This is a moderation outcome, not a public-facing tier.

Content is rejected when:

• Its primary purpose is sexual gratification with no independent story, character or worldbuilding value

• It violates the Content Creation Policy or Zero Tolerance prohibitions

• It violates platform rules, app store rules or law

• The story, characters and setting exist as a thin wrapper around explicit material rather than as creative work in their own right

Visual Content by Tier

SFW:

• Casual wear, professional attire, modest fantasy outfits, beachwear in context

• Standard portraits, action poses, platonic interactions

• Public spaces, adventure/fantasy locations

M17:

• Dark, violent or horror-themed imagery

• Blood, gore, weapons, war scenes

• Intense or frightening imagery

• Suggestive but not explicit (no nudity, no sexual acts)

18+:

• Lingerie, undergarments, deliberately sexualized outfits

• Provocative poses, seductive expressions, intimate positioning

• Partial or full nudity

• Sexual acts depicted or implied visually

All cover images across all tiers must be SFW and browse-safe. No exposed genitalia, nipples or explicit acts on covers regardless of tier.

Textual Content by Tier

SFW:

• Adventure, friendship, non-romantic or mildly romantic plots

• No sexual references, no heavy profanity

M17:

• Suggestive descriptions, sexual tension, innuendo

• Heavy profanity

• Violence described in detail

• Fade-to-black intimacy

• Dark themes (trauma, abuse as backstory, psychological horror)

18+:

• Explicit sexual descriptions

• Detailed intimate scenes

• Sexual slang and explicit language

• Adult relationship dynamics with explicit content

Heat Level Reference

Heat level is a scale used in prompt guidelines to instruct the AI on how explicit intimate scenes should be.

Levels 0–2: SFW or M17 depending on context. 

Level 3: M17 

Levels 4–5: 18+.

Common Scenarios

Rating Process

1. Select your tier: SFW, M17 or 18+

2. Apply the bright-line questions to determine correct tier

3. Add metadata and genre tags

4. Public content undergoes moderation review. Tier adjustments may occur.

Enforcement

Misrating content may result in tier correction, content rejection or account penalties depending on severity and frequency. Deliberate misrating to avoid age-gating or to gain visibility in a lower tier is a policy violation.

The moderation team holds final discretion on all classification decisions.

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