Guardian - identity shenanigans when Shen Wei and ZYL are in the very, very early days of their relationship but the rest of SID doesn't know Shen Wei's identity yet. Involves Shen Wei having to be away on Dixing business for a week, two weeks, and ZYL pining and missing him like crazy and then when he turns back up it's as the BCE in the middle of the SID office so ZYL has to stand a careful distance away from him and they both just have to act like Chief Zhao and the Envoy and like everything is normal... and then ZYL can't take it and says he needs to talk to the Envoy alone and drags him into the library and it's the first time they've kissed while Shen Wei is in his envoy guise.
Oh, and I've just realised that part of this is that the connection between Haixing and Dixing is fracturing and the portals are closing because of (REASONS) so Yunlan has to let him go back to Dixing knowing that he might not be able to get back through.
MDZS - post-canon undercover in a brothel fic. WWX is undercover because I have a mental image of him sitting in Lan Wangji's lap in a sort of gauzy Tang dynasty-esque robe that shows a lot of collar bone.
TGCF - Post lake-kissing scene getting together (this is going to be very dependent on what happens in the translation in the next few chapters, lol.) Part of this might be Xie Lian realising that he's been keeping to abstinence because his chosen cultivation technique means that his spiritual powers would be damaged by sex... but due to the curse shackles he doesn't *have* any spiritual powers right now anyway, so why not! *jumps Hua Cheng clumsily and adorably*