Mod probably didn't have time to look at it properly. This obviously doesn't match with what the community is for 😅
While penis doesn't indicate male and both Stelle and Kafka are obviously female and a yuri ship, as soon as a girl grows a dick the hentai stops being yuri hentai and becomes plain old regular hentai.
Rule #1, the only requirement is that all participants must be women. I also would not classify this as 'futanari' as the character in question, in this image, does not have a vulva, only a penis (& breasts).