The setup that Meiling is the senior despite addressing Sakuya with -san seems prevalent. I suppose it's an interesting alternative from the given Meiling really is the junior in the hierarchy. But I don't think that route is much explored?
Like, imagine a setup where Sakuya really is the senior staff- Wait a minute... Wait, wait 🤨 Does Meiling really call Sakuya "Sakuya-san"? Like, when? Where? IaMP? Soku? One of the endings?