Cousin

Cousin usually refers to someone who a submissive little) of somebody they consider their Uncle or Aunt.

Cousin dynamics can also develop between littles who feel a familial connection similar to that of a cousin.

Cousin is a family roleplay kink that can carry taboo/incest play vibes for some. It often paired with age play or some other power imbalance. This and other fantasy roleplay is not about actual family relationships, but fantasy that breaks a social rule.