After Being Reborn, I Discover My Twin Sister Is from Another World

Also known as My Sister from Another World. This book was originally inspired by the manga Uncle from Another World.

After being sent back to his senior year of high school by a truck, Yan Muyu was completely bewildered.

"Son, your teacher says you're dating someone. Is that true?"

"Don't listen to her nonsense!"

"Don't think I don't know. You haven't even opened any of those galge games I bought you!"

"And you've got all these girls' hair ties and scrunchies on you. Care to explain?"

"So what?"

"So what!"

"Look at A Xiduo next door. He's so well-behaved, almost thirty years single, spending every day on galge games and gacha games, and doing nothing but eating and sleeping."

"But you go wandering around every day. You're nothing like me, a shut-in. You've really let me down."

"Oh, Dad, I don't want to live like this anymore. What's the point of sitting around all day grinning stupidly at a pile of code and pictures?"

"You don't understand me at all!"

"How dare you!"

"I don't care who you are. Get out of my child right now!"

His dad went from an elite to a shut-in, and a pair of inexplicable twin sisters appeared on the family register.

A shut-in dad, a missing mom, a chuuni sister, and a bewildered him.

What on earth happened to this timeline?