[RFC] The Trials of the Brothers Grimm (working title)

[Black Aeronaut]

So
if I'm understanding the properties of your jumps correctly, you appear
in a universe, in which you have a certain set amount of time before you
disappear again, only to reappear in the same place and time you left
when you return there in the next loop.

Correct.

...what happens if you left the AMS universe inside, say, a
bedroom?  Would you then reappear inside that bedroom... inside a VF-1A
bigger than the room?  On that same note, what happens if you appear
next to somebody else?

The intention is that the increased
mass limit is intended for vehicles and other items that are intended to
be 'portable'.  As for appearing next to someone else... the jumps are
not intended to be malicious in such a manner, not even through the
inattention of the being enabling these jumps.  There will be no
'splatter-spawning' happening in this story.

I'd need more information. I.E. what are the goals in this.

So, why are the brothers walking the worlds, both personally and plot-wise ?

Okay, this is gonna be interesting...
There is gonna be the obvious - try to get back home.  Of course, we'll go the obvious route right away and try to ask Belldandy and her sisters for help.  They'll politely say no, and explain that they've been forbidden from helping on that front, and more than that they can't say.  This is a clue hammer that tells us the the Almighty is involved - and he is, but merely as a mediator and facilitator.  More on that in a minute.
Some of the brothers are going to be persuing all kinds of methods.  For example, one of them is going to Dragon Ball (post-GT, so the shenanigans will be to a minimum) and he is going to try and summon a dragon and wish for himself and all the rest of the brothers to be sent back home.  Of course, that one will be a no-go.
Eventually, some of us are going to start to realize that there is going to be very little point in going home.  My character will be the first to realize this as he'll be forming some serious relationships.  For others it will be due to what they feel is a loss of their humanity.
Outside that, we have a tentative plan for their to be a game going on between several ROBs, chief amongst them ATC's ROB as he would have been the one to instigate this game.  The Almighty is the one who has organized the game and the stakes are pretty high: entire universes.  The Brothers are the game pieces on the board, however rather than satisfy some condition, instead our future actions are wagered.  Bear in mind, though, this is tentative right now.

Interesting,
but the potential to go horribly, horribly wrong is massive,
terrifying, and possibly both in either order. I will be interested to
see how it goes...

Oh yes indeedy.  In particular - Nanami. 

Spoiler

In the anime the girl is shown as having a bizarre death
wish.  (No, really.)  You see, as far as I can piece together, she not
only has that odd gift that reminds me of the Sharingan from Naruto...
she also seems to have some sort of regenerative capability... combined
with an immune disorder.  That's right.  She is constantly suffering
disease and constantly recovering from it.  It was particularly
pronounced when she was a young child.  Her parents would stand a watch
helplessly, wondering why she simply couldn't die.  Fast-forward to the
present.  She's endured so many diseases with all their myriad toxins...
to the point when a ninja hits her with a poisoned caltrop it does
nothing to phase her.
Additionally, she has watched her brother
kill her father.  (Apparently this is a thing in Kyotoryu - the son
kills the father.)  And for some ineffable reason, her father also
killed her mother right after Shichika was born.  I do have a theory on
this.  The Kyotoryu is only supposed to have one master at any given
time - almost like the Sith Rule of Two.  (This is because it is
Shikizaki Kiki's final perfected blade. And there can be only one of
those around.)  Once their mother gave birth to Shichika... she was no
longer... needed.  :p

So, Nanami is constantly ill, and
has very little respect for life (even less so than your average
samurai warlord)... the only thing she really cares about is her
brother, Shichika.  I have an in with her because she sees me as someone that can keep her brother 'sharp'.