Finally, a semi-spicy lore chapter. It's been a bit.
To begin with, I'm pretty sure that's Shamrock next to Gunko in the flashback with Imu stating they need to turn Elbaph's army into slaves. This is furthering the Shamrock/Harald relationship we've only seen teased and Shamrock's connection to the former king.
Next, I think we can see Gunko's Arrow Fruit begin to flounder due to her emotional state: if you look at her sword in the panel where Brook is singing to her, it's loose and badly made: her emotional state is literally affecting control of her Devil Fruit, here.
The spoilers made it sound like Gunko was fleeing, but, here, she's standing her ground.
I believe we'll see Brook vs Gunko, and Brook's Awakening shortly, a fight I've been hyping for a bit.
We can see her Mark/Seal "stinging" her... I believe that accepting her own memories is literally painful for Shuri, due to her curse. This could also be related to her Bipolar Eyes, which we know little of.
Next, I find it interesting that Killingham actually asks Sanji what's wrong... like, this guy has been seriously fighting a God's Knight for a while, and now he's suddenly screaming over what now?
Also, this says so much about Sanji: man is near death and what is his fear? MEMORIES OF IVANKOV.
Man cannot face himself, and that's the problem with his CoC. The only enemy Sanji runs from is himself. Even his own father, who terrorized him, got the business before using women as shields.
Killingham is LITERALLY STABBING HIM TO death and Sanji is like "OH NO, NOT MY PERSONAL WEAKNESS, I THOUGHT I SEALED THESE MEMORIES".
That is a crazy amount of self hatred.
I've been pushing the idea that Killingham will be an ally in the future, and I think this is the beginning of it: IMO, the food the Celestial Dragons eat is soul-less. the Yoncooks are elite, to be sure, but... it's food cooked from fear, not food cooked from love.
I think Killingham is a Gin in the making, and will be kidnapped after this arc... and Sanji will feed him, food of love, the first real meal Killingham has had in years, when he's hungry and in the dirt.
Since Killingham clearly has non-human features, I believe, like Sanji, Killingham was bullied horrendously as a child, and became strong to overcome this, hence his racist attitude. Due to his comments on Fish-Men, I would not be surprised if he was part Fish-Man.
IMO, Shamrock was probably the one to reach out to him: I think Shamrock is probably well-liked amongst the God's Knights, and, like Shanks, is good to his co-workers.
Gunko has shown a remarkable level of disdain towards Sommers and Killingham at times, while more or less worshipping the ground Shamrock walked on when dealing with Loki. I don't think that's a coincidence, I think Shanks really rubbed off on Shamrock and made him a better individual.
I also believe Gunko helped teach Shamrock swordplay when he grew up, so, I'm interested to see how he will handle her betrayal, as I think Shamrock views Gunko like an aunt, almost. Shuri/Gunko will help us understand Shamrock's character more going forward.