And why there is tag touhou? I think it should be removed

Pixiv title:

ぬえの貴重な出産シーン
(Nue's important childbirthing scene)

Tag: Alien*; Alien Queen; Houjuu Nue*; Touhou*

and predator would be... Shou?

I don't know why but this really hurts me.

Took me a moment to spot the wings.
By the way, there was no queen in alien. The first queen appeared in aliens (the second movie). Should it be tagged according to this?

There's tag for each movies ?
Personally, a tag for the whole franchise is better or else there'd be need for special tag when game/comic/novel specific variants came out too.