At some point in canon, alpha Zhao Yunlan very accidentally delivers a claiming bite to his (omega) boyfriend's omega brother Ye Zun. Can go as porny or comic as you want, and OT3 option is also welcome! Looking for Zhao Yunlan and Shen Wei's matching epic facepalms and Ye Zun's utter panic that Zhao Yunlan now has to deal with.

Bonus: The circumstances of the bond-forming claiming bite are utterly ridiculous, e.g. "Ye Zun tripped over his cape and fell so his neck went into Zhao Yunlan's mouth".

Extra bonus: Mpreg!