If you use Shadow Movement to sneak into houses and a pegasus team to pull the flying sleigh... yes, in this world, it's possible to become Santa Claus! But... the Christmas tradition doesn't even exist in this world. When Rimuru tries to explain it in detail to the people of Tempest, they end up summarizing it as a "party." The Christmas cake and presents are ready, and most importantly, Kaijin and the other Dwarves create gorgeous decorations that bring the Christmas mood to Tempest. On top of that, Eren and the children treat everyone in town with their heavenly singing.
I see something in the center, though.
لكن أرى شيئاً في الوسط
Und was haben wir da in der Mitte?
Aunque lo del centro me preocupa.
Aunque lo del centro me preocupa.
Par contre, y a un truc au milieu.
Anche se c'è qualcosa nel mezzo...
E vejo algo ali no meio.
Правда меня смущает штука по центру…