Wikipedia:Articles for deletion/List of adult animated films
There's a long article about adult animation on https://time.com/5752400/adult-animation-golden-age/ TIME and there seem to be other sources out there that recognise it as a genre.  As cinema releases typically get age-ratings, there's plenty of objective evidence.  The rest is then a matter of ordinary editing, not deletion per  and 
— user:Andrew, 14:12, 17 July 2020 (UTC)
Stance: keep
Cited policy: WP:IMPERFECT||WP:NOTCLEANUP (Wikipedia:Editing policy)