He isn't posting the same thing twice.
First one is a link to the page I think:
http://https//www.pixiv.net/member_i...st_id=62574832
The second one was supposed to be a direct link to the image:
https://i.pximg.net/img-master/img/2...master1200.jpg
I don't know if he miss-formed the URLs, but I checked the first one on my phone by opening any image on pixiv and changing the ID to this one here and I got an image of seemingly Yuri from GoD fighting some girl. Iris maybe.
I think it's somebody's drawing because there is a copy of it with the background and the fireworks removed. Also would they release something like that and spoil that Yuri is in this so soon?