#'oh yeah me and this rowdy squad 11 guy are gonna have so many good swordfights' byakuya is thinking

[recurring-polynya]

It has been 14 hours since I found out that, according to Kubo, Byakuya calls Renji by his given name "because Rukia does" and I am obsessed with this information.

This is both the best and worst possible answer to this question. I feel like if you asked Byakuya, this is exactly the reason he would give. However, if Rukia were present, she would lose her damn mind. While I do think Rukia's assertion that Byakuya didn't look at her even once in 40 years is hyperbole, over that time I can imagine Renji's name coming up in conversation once, maybe twice tops.

Like, two weeks before she goes on her fateful mission to the Living World, B's been shortlisting Vice-Captain candidates, and over dinner, real casual:

B: Rukia. You know your friend?

Rukia: My who now?

B: That friend of yours who shouts too much. The boorishly tall one. With the red hair. Is he in Squad Eleven now?

Rukia (wracking her brain frantically for people Byakuya would consider 'her friend'): You mean Renji?

B: Yes, him.

Rukia: What about him?

B: Is he in Squad Eleven? The Sixth Seat?

Rukia: ...maybe? ¯\_(ツ)_/¯

The next day, Byakuya's office, Renji shows up for his job interview.

B: You must be Renji.

Renji: uhhhhhhhh sure why not?