Adding song or parody of it as tag

I want to add guren no yumiya song as a tag. This tag is used to describe a post that contain or parody scenes from the opening.
examples
post #2339949
post #1415985

Sounds like a good idea. There's precedent with tags like enter_enter_mission! and sparkling_daydream.

You can just add the tag to the posts.

Okay, I just add it.