User blog comment:GreyStark/V5 FIRST news/@comment-25936766-20170914195730/@comment-4010415-20170915213516

At least on desktop Tumblr, you can get the X-Kit add-on, which allows you to blacklist tags, and you can blacklist "#rwby spoilers", "#rwby volume 5", and "#rwby5", so any posts with those in the tags won't show up on your dash. If someone you're following refuses to tag their spoilers, though, you'll have to unfollow them or just plain add "#rwby" to your blacklist to block literally everything RWBY.