Any FFXIV WoLxNPC ship, if only because the players get creepily attached due to the self insert nature of the WoL. An acquaintance once had a ship with a notorious one because they didn't know better, and now the WoL player is comparing other players of the NPC to them and infomodding those players to get the same ship dynamic again. They even got an expensive commission of the WoLxNPC ship based on their RP, but it was finished many months after the game ended and the acquaintance moved on.