SELECT tags.name FROM actors
LEFT JOIN releases_actors ON releases_actors.actor_id = actors.id
LEFT JOIN releases_tags ON releases_tags.release_id = releases_actors.release_id
LEFT JOIN tags ON tags.id = releases_tags.tag_id
WHERE actors.slug = 'vina-sky'
GROUP BY tags.id
ORDER BY tags.name;

SELECT tags.*
FROM releases_actors
LEFT JOIN releases_tags ON releases_tags.release_id = releases_actors.release_id
LEFT JOIN tags ON tags.id = releases_tags.tag_id
WHERE releases_actors.actor_id = actor.id
GROUP BY tags.id
ORDER BY tags.name;