Multi language and linking tag-pages

Hello everyone, the most tasks i could solve while testing Kirby, but there is one problem i stuck.

i have two country-flags on every page to swich from
/en to /de
/en/blog to de/blog

this is ok for almost all of my pages, but not for the tag-pages.

i can link from
en/blog/tag:dog to de/blog/tag:dog

but i have no idea how to realize the link:
en/blog/tag:dog to de/blog/tag:hund

i dont know how to fetch the german tags on the english page and vice versa.

You may have an idea for me, please?
Thank you, very much.

PS: I understood that there is a solution with predefined tags,
but it should work for new tag-pairs also without changing the config.