Wow, 5 yrs later and I still have the whole El Marrow sitting on 70% completion. The whole thing kinda stopped when DF released the remaster. I am gonna finish those backgrounds by the end of february and upload them so at least Year 1 is partialy Widescreen.
As for your question, visit
Download the zip file and place it in the game folder so the Residual will pick up the additional data.
But its been 5 yrs and i forgot how to apply it, it should be something simple by just renaming it "gamedata0000.dat" or something. Scroll a few posts earlier in this topic and you will find it.
Good thing the branch with this support is merged in master and I paid the hosting every year for the last 5 yrs
But shame on me for not finishing those, will finish at least 20 scenes in feb and upload them to the website.
Keep in touch, glad this topic is still alivr