In this game you had to corrupt her two bodyguards, the catgirl knight and the mage (named Leilei i think) before you could corrupt the princess. It involved a time limit gimmik based on difficulty and you had to manually interact with the girls' bodies. Cannot for the love of me find the game and I've been searching for around 2 hours. I believe it was also completed. If more details needed let me know. Thanks for the help 