Here you go fellas, save is after onsen has been completed (cuck mode unlocked, lilith threesome unlocked). If you want to revisit the onsen scene just click the icon in the app. The CG probably bugged out because I've already been through the scenes and/or received the relevant messages to unlock them, but they're not in the gallery, sorry about that. Just use the included full cg save from the game download to access those scenes.
Rename the save number to the save slot u want to put it to (20 for slot #1, 21 for slot #2 and so on). It should go into the last save slot right now (27).