I am Japanese. I met this game again and enjoyed playing it.
It's weird English because I'm using translation, but please forgive me.
Please tell me how to finish the jam flyer distribution and the pick-up at the bar. (＞人＜;)
There are 3 NPCs in town you have to deliver the flyers to. One in the middle of town, one at the tavern area and one in the graveyard.
Afterwards, you have to wait until Luna randomly appears in front of Jam's shop again and then you try to enter to unlock the scene.
It is currently too difficult to unlock and many people have problems with it. I will make it easier in a future update.