Surviving As The Villain’s Childhood Friend

I was reincarnated in a novel where the villain would destroy the world, and I had to stop the horrible villain for my family. At the age of 11, I entered the villain’s house. There, I met him…
“I—I’m not a child. I’m taller and my arms and legs are bigger than the others. I eat a lot of vegetables, like carrots, and I’ve even caught a demon all by myself.”
He had smoothly folded eyes, plump pink cheeks, and glossy lips.
It’s not what I was expecting, I think he’s very handsome.
***
I taught the villain about love and peace, and raised him well and beautifully. When we met again 9 years later.
“Yuria said the faster the progress, the better.”
That….It was a story about the speed of development of the book we read together…
He said, brazenly flirting with me.
“I studied a lot.”
“I will somehow try to win back Yuria’s heart. I tried…Meanwhile, I persevered.”
His eyes, folded neatly in half, looked just like the face I had seen when I was a child on a picnic. But the feverish look in his eyes belonged not to my cute childhood friend, but to the villain Roger Evelian.
“So I want to hear it, Yuria. How far can we go after holding hands?”
Where did my sweet childhood friend go?