The usual phrase is "[jag] kommer snart tillbaks", literally "[I] come soon back". You can also use tillbakainstead of tillbaks.
Han ar tillbaka
I think you mean Swedish and you say it like this välkommen hem.
And is "och" in swedish.
På svenska
be right back
"King" in Swedish is "kung".
Suedoise is French for Swedish.
Equality is "jämlikhet" in Swedish.
"Goal" in Swedish is "mål".
Cup is kopp in Swedish.
Spaceship is rymdskepp in Swedish.
Judge is domare in Swedish.