The White Cat's Revenge as Plotted from the Dragon King's Lap Novel Volume 1 was written by Kureha and illustrated by Yamigo.

Nineteen-year-old Ruri Morikawa gets wrangled into a messy situation when her selfish childhood friend strands her in another world! To make matters somehow worse, a mysterious conspiracy then gets her abandoned in a perilous forest. Through an unexpected turn of events, she comes into possession of a mystical bracelet that allows her to transform into a white cat.

Now that she's in the Land of the Dragon King, she has to hide the fact that she's human—which means spending her days as a little white cat, for the time being... But how will she exact her much-earned revenge against those who’ve wronged her while stuck in the form of a small, fluffy, cuddly kitty cat?!

The White Cat's Revenge as Plotted from the Dragon King's Lap Novel Volume 3 was written by Kureha and illustrated by Yamigo.

Now that the war with the Kingdom of Nadasha has come to a close, Ruri Morikawa can kick back and enjoy the rest of her days in peace...that is, until another nation's Beloved is attacked! The Nation of the Dragon King finds itself forced to take the Beloveds of two other nations under their protection.

As if breaking with convention isn't enough, the two are also a handful! One of them is spoiled and self-centered, while the other is hard-headed and strong-willed. Can Ruri and the others handle both these two unexpected guests, as well as the assassins targeting the Beloveds?!

The White Cat's Revenge as Plotted from the Dragon King's Lap Novel Volume 2 was written by Kureha and illustrated by Yamigo.

Ruri Morikawa was summoned to a different world along with her “childhood friend,” Asahi. Exiled from Nadasha, the nation that summoned her, she ends up living in the Nation of the Dragon King. Working a part-time job, attending tea parties—her life seems pretty fulfilling... That is, until Nadasha declares war.

Asahi, convinced Ruri is held by the Nation of the Dragon King against her will, plans to stand on the frontlines as the Priestess Princess. Can Ruri convince her errant “friend” to call off the war before it’s too late? And what is Nadasha planning, given they’ve never won a war before?