Notes:

Translation by Moydow

Ryouma: Return my cute Kamui to me!
My cute little sister loves him, and she only wants our cute Kamui back! (I think; this line was a pain to translate)
What do you say, cute but annoying foolish brother?

Marx: Since my own sister also feels the same about him…
It is so, that Kamui absolutely can't be allowed to return to you.

Judge Garon: What is Kamui's opinion?
[ even though, it's really my fault ]

WITNESS TESTIMONY
Kamui: I… um… you're both very important to me… um…

Marx (I assume so; this girl is from Nohr, right?): OWOWOW!
I get it, I get it!
I'll work something out, if you just STOP STANDING ON MY FOOT!

Marx: Indeed, I say…
Actually…
I wonder, what if Kamui is originally from Nohr?
[ Surely father cannot be evil… ]

Ryouma: I have it!
Yes, here I have a photo of our cute little newborn baby Kamui…
An absolute genuine photo I took in Hoshido…
Look at the shape of this eyelid…
The angle of the nose is exactly like mine, no?
Particularly, how about the small toe on this foot……

Marx: Wh-what… Give the photo to me, so I can verify it!!
O-oh, Kamui is so cute, and…
WHAT?! This is cheating!!!
Please stop, brother! No more!