I Was Reincarnated But I Don't Know Why

I Was Reincarnated But I Don't Know Why summary:

By the time I noticed, I was staring at the hands of a baby. It seems like for some reason, I got myself reincarnated. I also knew that I posses great power (Physics). However, I was born in a really small peaceful village, and there’s no place for me to demonstrate that power. I’m also able to make a lot of friends, but I was born with a sickly body as a child… I tried doing various things in order to grasp that power, what I thought at that time was 『I want to go on an adventure freely』. Incidentally, when went to the capital I raised a fuzz, why won’t you let me do whatever I want? And that’s where everything began.