Ah, I was hoping someone would post the NGNL extra picture. I know the top middle girl is Konami from the To Heart 2 franchise. Ironically, I've never played the game because she is featured in both the Aquapazza fighting game and as DLC in Dungeon Travelers 2 (although she exists as a starter in Final Dragon Chronicle/Dungeon Travelers). I would assume the other girls are from Visual Novels, but we'd need a real VN expert to point them out. Kinda wish Keima Katsuragi was a real dude now.
Locodol just instantly got more awesome for that. Got the series on Blu Ray, but it might be some time before I get to it.