Usually, Having cuteness in stuff is equivalent to justice.
This tag is frequently used for cat or Pokemon related illustrations. One common misconception was that the tag itself is also used on human characters. While this is acceptable, the better tag for these illustrations would be Moe.
Sometimes it is rarely associated with "Unyuu", a Japanese onomatopoeic word commonly shown as a sound effect when hugging things that are fluffy and soft (e.g : Totoro).