Okay so, thinking of Suo's arc, the first dangerous group we were presented was Keel, keel was related to a character who let himself be hurt and pushed his friend (Anzai) away to avoid him getting hurt further, and it was also the first arc where class 1-1 couldn't win on it's own and needed the second years.
Keel is a pretty brutal group in its methods, so it's not out of the question to think of threats of hurting friends being made and violence being exercised on the person "sacrificing" themselves. And you remember that Anzai was mad and wanted to find Nagato and fight him but in the end as he learnt everything that was going on they solved it with a regular conversation and a meal.
We ramped up the themes during the gravel arc, we're told about Sunaba district in Makochi, a very poor place where kids basically don't go to school and they end up working shady jobs for survival, both Suzuri and Shizuka are perfect representations of what can happen to people who grow in the same place but diverge later on, Suzuri stayed because he gave himself the role to protect and care for all his friends, no matter what, it kept them alive but it kept them miserable, meanwhile Shizuka got found by Kanji, Who heard her sing, offered her a job and she ended up forming bonds, but Shizuka never told her friends about where she came from and that ended up coming back to haunt them.
Now, Shizuka was aware they were after her, and she was bidding her time because she didn't want to go but she steeled her resolve and was willing to leave with Gravel if they wouldn't hurt her friends.
We're introduced to themes of human trafficking, poverty, corruption of youth, manipulation, social inequality..... So really it's not farfetched to think that Suo's arc could touch on human trafficking, given that Suo's dream is the emancipation of slaves.
Now, Shizuka gets protected, they force a confession of not wanting to leave out of her in full Nico Robin style and then they task the kids to protect her and Tsubaki faces Suzuri, for this one they needed 3 upperclassmen and Roppo Ichiza.
And then Endo showed up, and Endo has all the shady connections and doings he can, however he seems to be able to call off Shizuka being trafficked or deal with the fall out andhe mentions some guy who was behind all this.
Am I crazy enough to imagine that guy could be involved in whatever is going on with Suo and that's exactly how Endo is going to find out about where he is.
We're shown Noroshi afterwards, that we need all of Furin to face, and again we're introduced to self-sacrifice from Sakura this time.
I'm saying, the topper of darkness in wbk seems to not want to get itself into mafia or Yakuza related things, Makochi has plenty of shady gangs, but they stay gangs. I think a mafia or Yakuza would work on bigger cities.
But wbk still doesn't shy away from topic of extortion, torture, human trafficking, duress, social disparities...
I'm just saying, we had a character pushing away a friend so he wouldn't get hurt while he gets hurt for not performing to the gang's liking, a character that almost got trafficked and wanted to avoid her loved ones getting hurt so she tried to offer herself freely, we had a character being told them being there was hurting their friends (Endo was one hell of an asshole) and convincing him the only way to stop their friends from getting further injured was to just leave with him.
And then we got a character who lost everyone in his family, to show us Nii-sensei is not scared to talk about death, to show grief, not because he might kill a main character, but because we might yet have to see the effects of a funeral on another person and without any support in a flashback, because we might be shown more graphic death scenes than Umemiya's parents. Because Momijikawa's arc touched on the topic of suicide, and showed how taboo it is to even imply it in Japanese society but how unafraid Sugishita was to use it, normalisation is important, because it reminded us that Nii-sensei wasn't scared to bring heavy topics, in case anyone had forgotten about Ume being suicidal as a child after his parents death. We might get some more suicide related stuff this arc.
We're definitely getting someone who was previously trafficked, who worked for someone else for years (slavery adjacent) and then got rescued but somehow lost his support system before the main events of the series and is willing to go back after being found in order to avoid their friends getting involved, or perhaps they already threatened his friends.
It seems pretty in line with the topics of Wind Breaker, that's what I'm saying.
If Sakura and Suo do fight, it might be about Suo saying to stop trying to get him back and maybe implying he's not worthy of being rescued or he doesn't need it, and not about how or why Suo left.
Also, while I'm on it, Suo's name not being Suo Hayato or him not existing before middle school, doesn't exactly mean anything bad or him "pretending he's someone he's not", because if Suo was trafficked as a child but remembers his birthday, he definitely was old enough to have a name, a name he might not want anymore depending on how he ended up on the trafficking network, then comes the very likely probability that he was given a number instead of a name for being trafficked, then whoever bought him might have given him a new "name" for his "job" and finally if he got out, because of the meaning of his current name, I do think it was a name probably given by his master, and one he is quite fond of. So again, not necessarily a bad thing, but something Suo knows shouldn't be brought up. A new identity keeps him safe until it doesn't anymore.
Anyways, I hope you enjoy the random products of my brain, I'll be back with part 3 of my arc analysis later today.