screw it, i’ll finish now;
 
celestia: <zzz…  
some creepy bedroom stalker: since i have some free time, i thought i’d peek into her dreams, but… she’s so defenseless….
 
tia: luna…  
luna: !?  
luna: (…sleeptalking…?)
 
luna: seeing me in her dreams? perfect timing for the real one to appear!
 
luna: ♪
 
*
 
luna: tia!  
tia, wake up!  
blanket: !?
 
tia: what? are we under atta-  
luna: ssh!  
tia: ?!!
 
tia: …then, what’s up?  
luna: since, in general, i’m done with my official duties for now; i was thinking we could sleep together. (lie)  
tia: …….? what’s up?  
luna: just what i said!!
 
luna: it’s fine, since until the time to wake up, i’ll let big sis sleep properly.  
luna: <just for once during my duties…  
luna: (cramped)  
tia: ….  
tia: (cramped)
 
tia: i see… good night luna.
 
*
 
luna: i’ve returned home and am now by your side, so can you please not see me in your dreams or anything like that.
 
tia: …sorry…  
luna: if you’re going to apologize, give it to me in a dream…  
tia: ….
 
*
 
luna: tia… look this way.  
tia: …  
luna: hey.  
tia: ….
 
luna: heeey! face me!  
luna: don’t think it was all your fault!  
luna: those kinds of dreams are done for tonight!!
 
luna: but even so, you still want forgiveness?! in that case, face me properly! make a smile for me!  
luna: like how you used to long ago!!!
 
tia: …that’s difficult, isn’t it…yes…awfully..
 
tia: i didn’t want to choose you… surely, even now, it’s still…  
luna: ….
 
tia: they were different at that time,  
our roles and duties  
tia: and from then on we changed as well-
 
tia: it’s fine, whether i waited a thousand years or however many millenia it took, i was calm. so long as luna would return.
 
tia: someday…  
if someday… we were no longer needed in this world-  
tia: if i were to only look at you like this for the first thousand years, would it be fine?
 
luna: ti…
 
luna: tia’s so sly!!  
tia: o…ow  
tia: <don’t hit me
 
luna: i don’t know if our not being needed or our “vanishing” would be first, though.
 
luna: well, rather than waiting for however many thousands of years, let’s hurry up and finish this!
 
luna: lick
 
tia: well then, in that case i’ll go to sleep already.
 
tia: i’ll take this chance to be sly. when it’s that time please wake me up….  
luna: !
 
luna: …
 
luna: (in my foolishness, i can’t stop hoping…)
 
luna: (for this night to last forever…)

about 2/3 done, expect post within 2 days (doing this in between work and some other translations)

They are having a confrontation about the events of 1000 years ago, most likely.  
Celestia says ‘1000’ twice about 3/4 through.

Not arguing. This is a small drama piece sometime after Her Highness of the Night returns.
 
I’ll get around to translating it eventually. For now, it’s still during a work week.

@JP  
The complexities of good and evil.

@JP
 
twilights plot

I can guess something from the context, but what are they arguing about?