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.
will further strengthen the bonds 
between the residents of Tempest.
الرّوابط بين سكّان تيمبيست
um noch festere Bande zwischen
den Bewohnern Tempests zu schmieden.
para afianzar las relaciones
de la gente de Tempest.
para afianzar las relaciones
de la gente de Tempest.
les habitants de Tempest
vont renforcer leurs liens.
vorrei che gli abitanti di Tempest 
legassero tra loro.
para que os habitantes de Tempest
formem laços ainda mais fortes.
скрепит узы жителей Темпеста
ещё крепче, чем прежде!