I Became a Black Cat, and Went Wandering with Ergou

[Two male leads + devoted to each other + cozy, sweet romance + no genderbending in the main story]

Mu Cheng crashed his race car off a mountain road. As soon as he transmigrated, someone tossed him into a trash can. When he came to, he discovered he had become a black cat.

Hungry, he went looking for a feast, only to run into the original body's enemy. He immediately clawed the guy's face to ribbons with his Nine Yin White Bone Claws.

While making his escape, he accidentally hit an orange Chinese village dog. They say a fight is the quickest way to become friends, and from then on, the cat and dog stayed together.

Mu Cheng: “Brother Xu, from now on, I'll roam the world with you!”

Xin Xu: “Little Orange says he wants to be with me forever! He must be asking me to be his mate. I'm so happy!”

Chuunibyou young master bottom (Mu Cheng) vs. loyal, love-struck top (Xin Xu)

Couple: Mu Cheng and Xin Xu (their names together sound like “set one's heart on someone”)