The shift from dekai to is the secret sauce. In standard Japanese, you might say Dekai da or Dekai n da. But dekain as a single, run-together word achieves three things:
: While originating from within certain niches of Japanese pop culture, these themes have found global audiences. The love for cute and charming characters transcends cultural boundaries, contributing to the international popularity of anime and manga. uchi no otouto maji de dekain.