Atashi wa Neko, Kimi wa Dakimakura

Esthetician Akamine Rina is satisfied with her work, but she is exhausted every day when she gets home. One day, her sister introduced her to a pastry chef named Nozomi, and she ends up sharing a room with him. She thought the roommate was a woman, but on moving-in day, it turns out to be a man. And that night, Nozomi is half-asleep, so they end up sleeping together...! She's excited, but she melts...!? A tired girl turns into a soft, squishy cat and gets soothed in this sexy love story!

(Source: Kodansha, translated)