Desuwa is the signature sentence ending of Hyakumantenbara Salome, a Nijisanji VTuber known for her ojou-sama persona, and fans quickly turned her catchphrase into a shared in-joke. Clips of her saying perfect desuwa circulated among Nijisanji viewers and VTuber editors, who reused the line whenever a moment felt elegant, successful or deliberately dramatic. Its short length and instantly recognisable delivery helped it travel beyond livestream highlights into short-form edits, where it now works as shorthand for smug, ladylike approval.