Got the Promise Crate. Original plan was to hold onto one ring for Shimakaze and give the other one to Roon. 141 pulls later, no Shimakaze. Now I'm trying to decide which of the 5 options I should go with. Options I've thought of so far are...
Roon and Hornet (open to substituting Hornet with Kashino)
Zuikaku and Shoukaku
Illustrious and Unicorn
Akagi and Kaga
Richelieu and Jean Bart
And in case anyone's wondering who else I've oathed so far, Taihou, Long Island, Prinz Eugen, Enterprise, San Diego, Atago, Littorio, Hood, Takao, Amagi, Yukikaze, Ibuki, Nagato, Azuma, Shinano, Belfast, Bismarck, Cleveland, Bremerton, Saratoga, New Jersey, San Francisco, Baltimore, Tirpitz, Friedrich der Grosse, and Z23.
Also, if I decide on Akagi and Kaga, I'm gonna wait until December 7th just to be a sicko troll (...well, kinda, I also see it as giving that day new symbolism to help them move beyond their past as war machines).