Courtyards.

The 'courtyards' are, in fact, a large garden, filled with various poisonous flowers, none of them edible by any living creature in Soul Society.
Shinigami in this squad will often come to train Kido here, due to there being more space than in the barracks.

Gin strolled through the gardens, smelling the air and noting the scent to be quite sweet.
Let's hope no kids try and eat the plants. he thought to himself, leaning over to observe a particularly colourful flower in detail.
I don't remember planting this one..

"Captain Ichimaru!" Renji calls out running up. "Sir..." Renji forgets what he was saying and gazes hypnotically into the flower. "What a pretty flower..."

Gin comically punched Renji in the back of the head, pushing his head down away from the head of the flower.
Stay there too long 'n' the neurotoxins'll kill you. he informed Renji, letting go of his head.
What do ya' want?

Byakuya landed, making a faint sound, when his sandals hit the paved floor.
"Gin," he said nodding his head towards Captain Ichimaru, and cast a glance towards Renji before addressing Gin again.

"The captain commander. has requested that all captains report to him immediately." With that he turned and dissapeared, briefly reappearing on top of the wall several hundred meters away.

Renji would shake his head to clear it. After hearing Captain Kuchiki inform Captain Ichimaru what he was originally inform to say a feeling of shame rushed over Renji as he sulked back the division barracks

Gin tilted his head to the side, sighing mockingly and leaping away in the general direction that Byakuya took.
Creep. he commented, loud enough for Renji to hear before he disappeared to go to the Captain-Commander's office.

Turns his head slightly hearing Captain Ichimaru's remarks towards Captain Kuchiki, he says nothing but firmly grips the hilt on Zabimaru

(um...Gin was calling Renji a creep, not Byakuya)

(oh...my bad..)

He's calling me a creep? Renji thought to himself amused at the simple irony of Captain Ichimaru's remark