M ~Onee-chan no Shuuchuu Chiryou!~

When the main character wakes up, he finds a nurse sucking his dick. "What!?" He also finds himself wearing girls' clothing. "Oh, it seems your fever hasn't passed off yet? How about this completely erected dick...?" He doesn't know what's going on, but she just smiles and kisses on his dick, "Good morning, my heroine."