They've released 'Our Sangkaehwan: The Movie'! Haha.

Starting today, Episode 4 can be viewed on social media platforms like YouTube and Instagram, as well as on online video services (OTT), and on offline channels such as buses, subways, and theaters. The full version is said to be uploaded to the Sangkaehwan YouTube channel on the 11th!
I'll have to go watch the full version when it comes out! Hahaha