yeah, that section isn't complete and it'll probably be a while longer before the northern city gets rebuilt, however they did release some extra content for gravel up there, it got added in version 0.34 a year ago. "Character Extra Content: Gravel. This content is mostly for sub bottom players. The Lavish Bar is now open. To unlock it you have to do Snake's romance."
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I see. Really odd though that romancing Snake unlocks more Gravel content when Snake is clearly monogamous, which is the entire reason I didn't want to romance him. I just didn't realize that not romancing him would suddenly make him despise me and never interact with me again. Though for some reason Snake still doesn't seem to mind casual sex in the MC's bed regardless of who else I'm in a relationship with. Honestly I kinda feel most of the Snake scenes, relationship-focused or not, don't make a lot of sense and should probably be rewritten.