Ok two things:
first the "BUG" for jessica is related to a compilation error that can be fixed this way: in the MAIN GAME / GAME folder you will find the file named jessicalabel.rpy, open it with notepad++ than click on the search tab, point your cursor at the top of the file and in the window that will pop do not write the name of the line that the script could not find, instead write the wrong command, EX if the script could not find jessconti7 than you need to write jessicaconti7, while if the script could not find jessicaconti7 you need to write jessconti7. When you find a line "label jessicaconti7": OR "label jessconti7", you must change it with the same line the script is searching for.
The second thing is that Grisaia and Other Jp VN or Dreaming of Dana or BB or Dating my Daughter, are the Mass Effect trilogy of VN's ( music aside ), so even if i'm still a patreon of Dark Silver, MrDots and of Ptolemy, i'm pretty sure that to hope that at least one game will be better than what is aformentioned is already to hope in a miracle, to hope that all 3 will be better is like to hope that a meteor containing a fish from another world, will hit the bowl of my cat