Mathematics is actually the easiest subject in the world!

The sumptuous meal ended beautifully, filled with warm laughter and pleasant conversation. It was a picture-perfect dinner for the four of them, especially for Carl, bridging the gap between his modern self and the original owner of the body.

"A perfect dinner indeed, but right on cue, here we go again with this stupid math." Carl scratched his head in mock frustration. Another grueling session of academic torture was waiting for him.

Creak...

'Speaking of hassle, this is actually the exact hassle I've been waiting for all evening.' Carl heard the door click open, signaling that it was time for another round of specialized "sex education"!

"I'm here, Carl. Did you study hard and try to solve the practice problems we went over last night?" Lyra stepped inside wearing comfortable nightwear—a simple pajama set decorated with cute cat stickers, paired with a loose, soft cotton t-shirt. Her long hair was tied up into a casual, slightly messy bun.