@NaniTheFuck:
"He got blessing, he got smart companions."
Yes, he got his blessing from the goddess, but it doesn't mean he's her rival. She didn't even give him a full blessing like she gave the other heroes. Didn't even try to explain what's going on in the world that required the need of heroes. Just gave him a quick power boost and dropped him from the stratosphere like a piece of garbage. As for his companions, that doesn't really help his case. Shin is only interested in Edo era Japan and was in a shrine for the longest time and Mio doesn't really know what's going on since her only memories before the MC were being a crazed and eternally hungry giant spider. Both serve as his bodyguards and are also new to figuring things out in the world alongside him.
"tell me what keeping low profile with those act?"
2 reasons:
1) The villagers. He can't speak the language (he only knows the monster language) and his magic level is as strong as 10 Demon Lords. As far as the world is concerned, he's a monster that needs to be eradicated. That's why he uses mana absorbing garb. And while he knows how to write the language thanks to his magic, speaking it is another matter, since even toddlers can master the language at age 3 by the goddess. So basically: if he doesn't want to be hunted and killed every day of his life when he's trying to live peacefully with the other races, he needs to keep his head down.
2) The goddess. As strong as his magic is, the goddess's powers are still significantly stronger. She created the world, its rules, its races, and its magic. She ordered him not to leave the far edge of the world where the humans reside because she doesn't want his "ugly" appearance to to propagate with her beautiful human creations, regardless of how gifted he is. Seems even the other gods have a hard time controlling her behavior, which is an indicator of her strength, not just her attitude. He even acknowledged that as much as he hates her, if the goddess found out, he broke her orders, there's no telling what she'll do.
"Dont forget he is from "Earth", he also read Novel and Manga, play Games."
Not all kids play manga or video games. It's common, but not always a sure-thing. Even then, you need to remember his personal tastes. He prefers the archery club, meaning he is closer to being an athlete than a nerd. To go even further, he watched old historical dramas, and only watched anime once. So your claim is invalid in this regard. He's a nerd, but not a fantasy nerd like the rest of us here in the comments section. Everyone has their personal preferences. It's ignorant to assume they'll match with yours.
"(not to mention he is an asians that has hardcore education)"
I agree this wasn't racist, but at the same time you could have worded it better. Doesn't matter, though, you're right about Japanese culture on education. That being said, though, as dedicated as he is to his studies (the manga indicates he was actually a good student), I don't recall any coursework or tests on what to do when your a flung into another world. Just the usual math, English, and science work. If there's a school that teaches this, I'm taking my kids there! Also, as you said, because they put a heavy pressure on getting a better education, free time is low, so this would actually hamper any free time or manga/game time that could have been used as knowledge. Put simply, this phrase has NOTHING to do with his knowledge on pre-preparation of the other world.
I stand by what I said about his low awareness, and a teenager IS a kid. A kid is an immature human who has yet to reach full adulthood, like yourself. Nothing wrong with being a kid. Just means he still has some growing up to do and more to learn. If the MC bothers you that much to enjoy reading it, do yourself a favor and drop it for something more your tastes. Not trying to be a dick, and I apologize if it came off that way, but from your comments seem to indicate you don't enjoy it. So why torture yourself, right?
