How does ending C trigger?

[東方的幻想鄉]

After I have collected seven losas grabadas, the option does not appear under the spawn point to trigger the key item that can enter ending C

[Reyes]

When you collect all the slabs you have to go back to the place where you started the game, on the left there is a door that at this point you can open, when you reach the depths you place the slabs and you will get the necklace that when equipping it and going to where the final boss, you will activate the route to the ending C

[東方的幻想鄉]

But after I collect the slate, there is no option to place the slate in the deepest part

[DarkFenix]

You need all 7 stone tablet fragments, then you go back to the room below where you start the game, you can interact with that room only if you have all 7 fragments. That gives you the luminant aegis curio, the relic you need to have equipped for ending C.

[東方的幻想鄉]

But I already have 7 shards and that room still won't let me interact

[Moth]

I am having the same issue. I have tried uninstalling and reinstalling etc and it still is not working. I have all 7 tablets and it also wont let me interact

[eiennoaselia]

you need the frags to make the pendant too. im not sure if its the hp frag or the heal power up frag from the priestess someone try in my place

[sandyhanauer2]

Can't do it either...anyone with a good solution out there?

[Gealdaydreamer]

Probably get the first two endings first?

[q123429507]

Please turn off any cheat codes or modifiers before attempting to trigger it.