After finishing the game, i can finally access the gallery menu and it looks great but when I reach the last gallery part. I noticed there's a lock CG for two of them I think, so I don't know how to get them.
Youre likely missing the two side stories "Halloween" and "Vessels". To get Halloween you'll need to re-download the game and start from scratch and click on Cam and Dev in the main menu instead of Start. Once the main story is complete do the same thing and you'll get "Vessels".
