My outward age is 3. But inside, I’ll be 30 this year.
By the time I became a hikikimori, I had already mastered those four basic mathematical operations.
I was able to memorize without any difficulty the alphabet they used in reading and writing. Maybe it was because I was in growing up phase, or was reincarnated, or the combination of those two.
From the history lesson, I received details on how this parallel world came to be.
Because the entire lesson took a day to end, the rest became summarized.