When My Archenemy Got Smaller

On the day Chi Xi turns twenty-two, he discovers that he's a cannon-fodder supporting character in a novel, doomed to die young. That would be bad enough, but why does his nemesis get to be the big villain who survives to the very end? Starting tomorrow, he'll be fired up and determined not to be cannon fodder. He'll charge straight down the path to becoming a big villain himself. But when he wakes up from a nap and opens the door… His nemesis, Wen Jichen, has been ambushed and turned back into a six-year-old. He stands pitifully outside Chi Xi's door. The impeccably dressed, impossible-to-please old bastard, with his deep scheming and ruthless methods, is gone. In his place is a little kid with no guardian to claim him. Chi Xi: “Wonderful!” Chi Xi: “Call me Dad and I'll take you in!” Wen Jichen: “…” The day Wen Jichen turns back to normal, Chi Xi is unusually nervous. What if President Wen comes after him for all the ridiculous things he did? Wen Jichen: “It's fine. I'll repay you in bed.” In short, it's a story about becoming your rival's dad first, then becoming his wife. [Romance-focused! I'm still learning how to write a two-person romance, so I'm going to study, study, study! A naturally flirtatious, cheeky bottom × a deeply calculating old bastard top. More or less a fool × a grump. P.S. The top turns back to normal halfway through the variety show. The show isn't the main plot; every setup serves the romance between the leads. Just a sweet little bedtime story. This one shouldn't be too long.] Theme: Pluck the stars for those in need, and pass the warmth along.