By O Factor
- G ~ No sexual content or children’s books
- PG ~ Young Adult or content suitable for a mature children’s level with little to no sexual content
- Sweet ~ Adult romantic content with sexual tension but if any, sexual content is alluded to.
- Spicy ~ Has sexual content. However, it may be limited and/or has little to no kink involved.
- Scorcher ~ Sexual content is plentiful, explicit and/or has an element of kink involved.