So now you are talking "adventures" with pre-defined outcomes. So the story is already written, and you are just choosing at various times which path, and resulting outcome, you get to pick.Well, yes! I would love to play a 7-minute long D&D story which covered the same amount of plot as a D&D comic issue. Yes! Just the thing for a quick game. A complete adventure in 7 minutes! Yes!
As it stands, 7 minutes of 5E play covers like one round.
The comic book-sized plot would be resolved through various quickly-decided "moves" that the character(s) make. And the story unfolds in 7 minutes. Great!
It's still a TRPG (and not just a comic-book-sized Lone Wolf-style choose-your-own-adventure) because there'd be a number of different story/plot options supported, and there'd still be a DM (to fill in the holes with improvisation), and because any character could be brought into the story (not just a pre-gen), and because the character advances in level. So the book would be somewhat bigger than a comic-book (due to having to support a number of different possible plot twists, depending on the actions of the PC(s)), but it'd play out in 7 minutes. Done.
That would be the quickest ND&D format, alongside short-story-sized ND&D modules, novella-sized ND&D modules, novel-sized ND&D modules, and trilogy-sized ND&D modules.
You still have lots of problems with your idea;
- First, as soon as you have 2 people involved, you will no longer be able to do ANY reasonable adventure in 7 minutes. Do you even understand why? One person could lecture to the other a plot in a few minutes, but no options or variations would take place. This is called "story time" and you often find it in Kindergarten.
- Second, you are talking about a choose your own railroad adventure. The adventure has already been prepared. You understand this right? You talk about having a DM to fill in holes with improvisation, but you can't do that in a few minutes. Do you understand that? Human interaction takes TIME. And the more independence the game allows, the more time it takes. Do you know why? Because the people are interactively creating the story, they are developing the story as they go, they are not choosing from a few pre-developed possibilities.
Look, I get your excitement with your idea. But do you even have much experience playing and running a variety of RPG games? Are you familiar with a dozen different systems? What about "solo adventures", have you gone through and read one or two of those books or grabbed a Solo adventure and worked through one?
I don't think anyone wants to kill your excitement, just temper it with experience and opinion because their are a lot of concepts that you seem to be missing that really makes it come across as if you don't really know what you are comparing your suggestion against.