Well, to shed some light on the issue of subs - from what I know - essentially the official subs of a show are also copyrighted content though separate from the show usually. Fansubs are not (well, they are the copyright of the fansub group). So, basically fansubs are legal to download and add to video content you own legally. But, disseminating the official subs is also a kind of copyright infrigement, as far as I know.
Though, it’s really not up to me to decide on these things. The Mods are looking at this thread, and taking action when needed, so we’ll just have to comply with the forum quidelines as with all threads on this forum. 
especially the last bit " * Before you post, make sure that everything is legal. We don’t want anything illegal to be shared on the forum, like illegal manga, shows, learning resources, etc. Any illegal activities will not be tolerated."
I hope this answers your questions. I can’t say I know kitsunekko.