Jigu Jeongbong! Jjonnyami

A distant universe's Goyeongbyeong is in danger of destruction! To solve this, the cat agent Jjonnyami is given the mission to conquer and explore Earth. However, on a rainy night, he fails to land safely and crashes to Earth. Meanwhile, So-Hee, who is on her way home after a hard night's work, finds Jjonnyami lying on the side of the road. She can't just pass him by and brings him home... This guy talks and has a huge appetite; he seems to be no ordinary cat! Maybe he's a little cute..? The story of the tumultuous Earth life of Jjonnyami, a lowly Earth invader, and So-Hee, an ordinary office worker living in reality!

(Source: Kakaopage, translated)