JOHNDOE1704'S PROFILE

Just finished the game, amazing work. The balancing was really nice, I liked that you never really had to grind but still had to find out which tactics works best in fights. Also really like the atmosphere and story.
I'm still curious if its somehow possible to get behind the clown (Bob) in the second floor of the pharmacy? You have to enter a 8 digit code.
Also, what's the use of the two safes at the beginning of the game? (One Risas house, the other one in the house with the three combat trainer)
I finished the game with 100% and tried every 8-digit sidequest code I got, but none of them worked.
Is the idea that with the release of later parts you can start with whichever game you want and then transfer your equipment to the new part?