June 4, on the much-awaited theatrical release day of the anime feature film Eiga Daisuki Pompo-san / Pompo: The Cinéphile in Japan, a 60-second teaser music video for its theme song “Mado wo Akete” (Open the Window) performed by virtual female singe CIEL was posted on YouTube.
Eiga Daisuki Pompo-san / Pompo: The Cinéphile was originally set to be released before the end of 2020 but has been postponed to June 4 due to the COVID-19 pandemic.
CIEL is introduced as “a cross-border type female singer who travels between the real and the virtual.