Unknown_To_All
In a previous chapter I had doubts about MC's mental maturity, whether he was receiving the effects of his teenage body, or whether he suffered from some mental illness in this or another life. I'm almost sure it's a small part of being affected by adolescence and a somewhat immature mentality, along with the impact of the situation in which you live, such as the mental stress of having changed worlds and the danger of that world, and the mental stress of the amount of knowledge that he's putting in his brain.