DLC how?
Extract the 1.45 base game, and then overwrite the files in there with the DLC files.
DLC what?
The DLC updates the base game to version 2.00/2.01, and adds:
new story content after the base game, and after the hot springs monkey attack,
new wet dreams for the imouto and 4 guild members, which are still randomly selected (Imouto: 2, Kana: 1, Yui: 1, Kasumi: 1,Yukari: 3),
new H events with the imouto in the house (a toilet scene - previously a FFFox mod addition - with two variations, a masturbation scene, kitchen sex, and a couple others),
new H events at the beach (with the imouto, Kasumi and Yui - need to finish the relevant DLC story parts first),
as far as the guild members go, only Kasumi has a proper story H scene. The others are relegated to wet dreams. Yui technically gets a scene during the story, but you can only view it in the album after finishing the DLC. All four get a new random bath event at the end of the day (same as the shower event).
DLC when? Now. Well, since Jun 12, really.
I get a GuruGuruSMF4.dll and a "Cannot find the following files" error!
You... just tried to run the DLC as a standalone game.
I'm not sure why you did that, but that is not how it works. Please refer to DLC how? above.
How to access the post-game content? Finish the game, duh.
DLC translation where?
Work is ongoing.
Two translations are being made - one by Shadesishere (the OP), one by Imouto_prpr.
Both are in the QA/testing stage.
Imouto_prpr's translation has its own thread and provisional WIP releases, if you can't wait for a polished pass.
Things are evolving very quickly, so put a pin on that and check recent posts in this thread for yourself. The OP will most likely be updated with Shadesishere's translation once it's complete.
DLC Uncensor where? mello.second is working on it, and will take some time after the translation releases. Keep an eye on the thread. (more info)
Android?
Not for now, depends on how easy it is to port.
Old mods compatible?
Depends on the mod. Stuff like Daseson's color mod might be, script mods are likely not.
Old saves compatible? If you had a save on slot 1, it will be deleted on the next auto-save. Please load it and save it on another slot.
If you don't come from a Kagura/Steam save, 1.4 JP saves seem to be compatible (including ones with the FFFox mod and a translation), or at least I haven't encountered a crash with them. I even got jumpscared with the post-game main menu theme.
If you come from a Kagura/Steam save, you can either:
edit your Kagura save file by changing the game name inside with WolfSave.exe and a text editor. (more info)
These options seem to work but neither has been tested with all game events, so I'd still recommend starting from a new save just in case.
100%/NG+ saves where?
I didn't see a 100% all-memories-unlocked save as of yet. You have the game's RNG to thank for that.
If you want to start a new game with some help (without using Cheat Engine), Seiryuu shared his NG+ Hard Mode day 2 Remodeled Genius/Peerless Onii-chan to prepare for the DLC.
EDIT 1 (2024-06-20): Added Kagura save swap info and error info
EDIT 2 (2024-06-20): Added NG+ save
EDIT 3 (2024-06-20): Updated the mysterious SC1.jpg error.
EDIT 4 (2024-06-20): Found the mysterious SC1.jpg error's origin.
EDIT 5 (2024-06-22): Updated DLC content and removed the obsolete SC1.jpg bug, updated save info.
EDIT 6 (2024-06-23): Updated decensor information.
don't wait, it's so low on my list of priorities right now, I'll collect issues/bugs/translation problems for the next week before I even start working on a update, the playscreen is just using the old translation, which is a mess. (also allows time for Inusuku to release more bugfix versions too)
*edit* thinking about it... will probably wait until after the 4th July... huh... we UKers are having our elections on the american's Independence day... cute. (or a sign...)
Hope everyone enjoys, please report issues, bugs, spelling mistakes, any jap text etc etc
except the following :
Play statistics screen (yes, I know I forgot it again... for the...4th update in a row... so it's just the old translation gobbledegook)
Japanese text in status screen when in the end of DLC content (I need to edit the image, I honestly thought it was an unused asset... like the new buttons that aren't used anywhere)
Kasumi scene background issue (an Inusuku issue)
Hope everyone enjoys, please report issues, bugs, spelling mistakes, any jap text etc etc
except the following :
Play statistics screen (yes, I know I forgot it again... for the...4th update in a row... so it's just the old translation gobbledegook)
Japanese text in status screen when in the end of DLC content (I need to edit the image, I honestly thought it was an unused asset... like the new buttons that aren't used anywhere)
Kasumi scene background issue (an Inusuku issue)