After picking an ending and activating the credits, you're asked if you want to start a NG+ right away or not. If you say "No", you're placed back at Roundtable Hold and you can manually trigger the move to NG+ at the table there after finishing up everything you need to in NG.
Thanks, that's great. I'm over 200 hours and I just can't get myself to do the ending quite yet. I spent a few hours last night going back and getting any cookbooks and tears that I missed. It was a good thing to mess around with because the servers were down late last night so I was offline anyway. It turns out I had missed several of each! In the process I discovered a few more mini-bosses that I didn't know about. There is one nighttime spawn in the forest with all the death-spewing creatures in Atlus. It dropped some tears that I don't even think were in the Wiki I was reading.
Then there's a dual Night Cavalry mini-boss by one of the carriages in the Consecrated Snowfield. What's nice about them is that after beating both you get an ancient dragon smithing stone plus the full Night Cavalry armor set. Now that is some cool gear!
I think I've cleared every dungeon. I've got all the cookbooks except one that is in Farum. I've done all the paintings. I could probably hunt around for a few ashes of war and ash summons I've missed, but maybe I will save that for post-game cleanup.
I haven't looked that much into the endings because I just didn't have the patience to trophy hunt this one, if that's even one of them. I do know that Ranni and Fia have endings because they were options, no clue about more than that. And yes, forgot to mention you can stay in NG after beating the game. I did that and explored a TON of places I had missed, which is kinda worth it since it puts those markers on your map for NG+.
Oooh, I'm glad the map markers stay. I was worried it would clear the map. Still, I don't like having all the dungeon bosses "un"-beaten by NG+

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Does this also mean you can go to a shrine and duplicate the end boss rememberance after finishing?
One question about Farum. Can you ever teleport out to other places once you are in there? My son is in it and is 4 sites of grace in and still can't leave. He wants to level up a different summons and he can't currently do that (or power up any weapons). I thought I read somewhere that eventually you can get out of there (before the final boss). My warning to anyone who hasn't gotten there is to make sure you are geared up well before going in, as you are stuck in there at least for a bit.
Oh, and *finally* my Nepheli quest shook loose after her sitting in the Roundtable basement and moping for the last 100+ game hours. I don't know what triggered it, but it seems when I beat the bosses in Haligtree/Elphael it freed her up. Ofnir finally thanked me for looking after her and she and a couple others moved into Godrick's throne room. There she gives you an ancient dragon smithing stone and also the other guy there sells you the other top tier smithing stone. That's one of the many sources of them (more were in Elphael and some are in Farum too).
I finished up all these quests so far: Nepheli, Ranni, Fia, Dung Eater, Hyetta (she's waiting by the Frenzied Flame ending door), Millicent (and Gowry), Thops (had no idea there would be a second Raya Lucaria key he wanted - had to look it up to find that out), Sellen/Jerren, Gurranq, D and his brother, Jar Bairn, and I'm still working on Goldmask/Brother Coryhn. I need to go to the later (changed) Leyendell area to finish that, apparently. The only one I missed out on was Selvius, since he dies so quickly during Ranni's stuff. You really have to progress far with him way earlier than I would think is normal (especially given that a dragon is sitting on top of one of the places you need to go and I put that off till too late).
I still need to go around and knock down all the shrines and duplicate some more rememberances. But somehow I'm still 5 short and I'm only counting 2 (maybe 3) more bosses till the end. Not sure what I'm missing.