Loid Forger was a psychiatrist and didn't know how to fight professionally. Loid wasn’t supposed to know that his brother in law was a part of the secret police and Yor definitely didn’t. As LoidTwilight kneels on the grim and dirty floor, ribs cracked and clothes torn, he wonders if this is how they treat all suspects.
Then Yuri, adoring, sacrificing Yuri, walks in. TwilightLoid ducks instinctively his head down. His pride unwilling to let a part of his newfound family see his weakness. His inability to protect, to defend. Then gloved fingers gently tilt his head up to meet eyes that widen imperceptably.
As Twilight looks at Yuri's face, he's terrified that for a moment Yuri actually believes that Loid deserves this treatment over those charges, those stupid, small charges. Instead Yuri apologizes, but Twilight interrupts saying it's not necessary, expecting another harsh, ruthless interrogation, this time by his little brother, with extra emphasis, telling him he'd rather get this over with.
Instead Yuri presses his head into the crook of LoidTwilight's neck, arms wrapped around his torso. Twilight rests his head on top of Yuri's to offer comfort, he knows that Yuri is his brother first and foremost. Twilight sighs before encouraging Yuri to do his job.
Twilight has never had a younger brother or siblings but he doesn't want Yuri to risk something he values for him (Loid) and he cares about Yuri's future, even at the risk of being found out. He offers Yuri all the comfort an older brother would, instinctively as soon as Yuri looks even the slightest bit affected. He'd want to tug the kid into a hug but his hands were cuffed and he had to pretend. He didn't think he could bare the looks on his family's faces if they found out he was a spy but... in that moment all Twilight wanted to do was give his little brother a hug.
But Yuri continues saying that they had checked the charges and Loid was free to go. Yuri unlocks the chains with care and patience that Twilight has never seen from the kid before. The first thing he does is wrap his arms around Yuri. Yuri's arms are instantly back around him, squeezing and oh shit, his ribs... Loid winces and Yuri immediately tries to release the hold, but Twilight, even as injured as he is, is strong enough to keep his little brother pressed against him in a hug, pushing Yuri's head back into the Crook of his neck, in a protective manner.