The addition of "de nada" and "video better" suggests a viral or community-driven origin:
: Users on TikTok often use the title as a "name" reveal in comment sections when others ask for the source of a viral clip. shinseki no ko to wo tomaridakara de nada video better
: This likely comes from Spanish-speaking users replying "you're welcome" (de nada) after providing the title to others. The addition of "de nada" and "video better"