I have the Lancelot skin and have attached the scene's dialog files (first.ks and scenario.json), but I get an unknown server error for the harem JSON files (8001_harem-job.json, 80011_harem-job.json, and 80012_harem-job.json). I don't know how to manually download these types of files.
Edit 1: I've updated the attached files to include the JSON files for the 3 skins, main quest 17, and main quest 18 (thumbnails for these as well) for the DMM version. I think Amon's and Kushinada's folders go in raw_scenario/kamihime_SR, Lancelot's folder in raw_scenario/soul, the story folders in raw_scenario/story. The story thumbnails go in story_thumb and the skin portraits can be downloaded from the wiki: https://xn--hckqz0e9cygq471ahu9b.xn-...82%AD%E3%83%B3. The dialog files are downloaded by the 1_download_assets (skip 0_download_json if you only want the skin and story scenes). I'm still downloading assets and troubleshooting, so those who don't want deal with bugs may want to wait until I get the scenes to work in the DMM player.
Edit 2: I've gotten the 3 skin and 2 newest story scenes to work in the DMM player. The skin scenes have blue names since they don't have encounter scenes, only the h scene story and harem. Overall, the JSONs have to manually downloaded and placed into the appropriate raw_scenario subfolder as mentioned above. Then use 1_download_assets, 2_build_rpy, and 3_write_config as usual. The story thumbnails, portraits, and full portraits have to be manually downloaded from either the game's website of the wiki and placed in either story_thumb, portrait, or portrait_full depending on the type of image.