Being a result of years of on-location film-recording in Jeju Island, the film's VFX was taken up
by DIGITAL MIRAGE Studio which worked on film noise removal, color-grading, and sky restoration in a major moving sequence. 

The 4K UHD documentary was released in 5 versions: A feature in English & Korean 

and a short versions per each languages as well as a less-than 5 minute documentary short

https://filmfreeway.com/projects/2128822 (Documentary short - Korean Edition)

https://filmfreeway.com/projects/2128597 (Documentary short - English Edition)

https://filmfreeway.com/projects/2127878 (Documentary feature - English Edition)

https://filmfreeway.com/projects/2126428 (Documentary feature - Korean Edition)

https://filmfreeway.com/projects/2128904 (5 min. short - English Edition)

The films are being submitted to selected film festivals.

After a private screening of the film before finalization, considerable percentage of viewers reportedly wanted to keep the film.
It's a good sign before public release.

And immediately after release the film got included in the official selection
of London Indie Short Festival of 24 Frames.

P.S.: As of March 11, 2021, documentary short edition of this film was selected by 5 film festivals and received one award: the Best International Documentary
given by the Los Angeles Motion Picture Festival, First Quarter 2021.

Official Trailer

Director's commentary on the VFX done by DIGITAL MIRAGE Studio.