The White Cat's Revenge as Plotted from the Dragon King's Lap v01-v02 (2021)

English translation of the Japanese manga Fukushuu wo chikatta shironeko wa ryuuou no hiza no jou de damin wo musaboru (復讐を誓った白猫は竜王の膝の上で惰眠をむさぼる).
My life was pretty ordinary. Go to college, live in an apartment, hang out with people. But because of that pompous, irritating girl I grew up with, I got dragged into a huge mess. As usual. Now I'm in another world where she's a well-respected shrine maiden...and I got turned into a cat. How did it come to this?!