T-Rex na Kanojo

T-Rex na Kanojo (T-REXな彼女, lit. "My Girlfriend is a T-Rex") is a manga series by Sanzou. It was serialized in Gene pixiv. T-Rex na Kanojo was published in English as My Girlfriend is a T-Rex by Seven Seas Entertainment from November 1, 2016 to January 17, 2017.

Plot
Humans and dinosaurs peacefully co-exist in our modern age. One night, Yuuma Asahikawa meets the feral t-rex, Churio. Follow the lives of (secret) ex-delinquent, Yuuma, and the very Cretaceous Churio as they spend their days together!