Any romantic and/or sexual depiction between females, doesn't matter if it's mutual or one-sided.
If it's mutual, consider adding the couple tag.
- Don't use shoujo ai / girl love as a tag; use yuri rating:s or yuri rating:q to search instead.
- Futanari is not yuri (see forum #11853).
- Use the bisexual tag where appropriate instead of the yuri tag.
The following tags implicate this tag: mutual_yuri.