I have restarted my game. From my gameplay, i interacted with every event icons in the park, and raise the excitement meter to 100 before stripping fully nude on the first night. Interact every possible areas (the water fountain, the second park entrance where you get spotted by an incoming car but you'll need to trigger it by moving away a little bit before going back to the second entrance). You won't be able to go behind the warehouse on the first night.
Leave the park and head to the restaurant where you ate while being topless. When leaving the restaurant, you'll encounter a car where the car's headlights shines onto your MC.
Returning back home, take a shower and order pizza. If the delivery man hadn't appear, go to the bathroom and head back out. Expose yourself at the balcony. You can interact the PC and pick all three of the options (Watch broadcast, Sushi and the boob stream).
On the second night, i did the same and raised the excitement meter to 100 but on this night, you can go behind the warehouse to touch yourself. Once you see the MC start to breathe heavily, her image changes when you get her to masturbate. Here you get to meet the second female npc. Interact with her in every location in the park, either pressing A or enter.
Leave the park, and the new female NPC will leave you. Head to the restaurant and you get to eat fully nude. Head back home and order the pizza to do whole process again. On this second night, interact the PC and select watch broadcast. From here, the MC will have a new line and pondered about live streaming.
The third night, do the whole exposure in the park and collect garbage. When you return back home, you can interact the PC to do live streaming.
From here on out, you will need to do several live streaming sessions (you don't even need to go to the park and just stay at home to do two streams in a day). Once you did enough streaming, you'll get the "naughty streaming" option.
I hope this helps for the both of you. Apologies that i haven't been responding, i have been busy.