Prince of Tennis: Carbin, the Cat? Making Ryoma Call Him Big Brother

[Prince of Tennis fanfiction + two male leads + cat turns human? + one-on-one romance + super sweet and doting + everyone’s favorite + happy ending] Mixed-race, catlike top who turns human, Calbin x Prince of Tennis bottom, Echizen Ryoma Echizen Ryoma woke up to find a handsome Western-looking guy staring at him and saying his name was “Calbin.” That’s right, his cat... Calbin had turned into a human?! Calbin: “Ryoma, be good and call me big brother.” Echizen Ryoma: “Once we get to Seishun Academy, don’t expect me to call you that.” Classmates: “Echizen, are you saying he’s your brother? Why does he look so much like a cat to us?” Echizen Ryoma: “You’re not my brother, so why are you insisting on acting like one?” Calbin: “How about a different title?” Echizen Ryoma: “I’ll just call you Calbin.” Calbin: “Maybe just call me big brother after all...” Echizen Ryoma is a cool, sensitive person with a competitive streak, but Calbin keeps leaving him feeling defeated. *No explicit scenes in this story! None! Everything stays implied! It’s all just a straight guy’s sudden inspiration!*