incognito burrito's Questions (3)

hey i forgot the title of this story, i forgot most of the plot but i remember there was this one arc where the mc has to do his military service thing and he’s super strong and OP. I remember that they would win all the challenges in the military service cuz the mc was so strong and they got to a longer break i think. Oh also i remember that he was kinda a clean freak and his part of the room was also perfectly clean.

a little while ago i read this manhua that is like set in a martial arts kinda world and the mc was like known as the dumb guys of the village once his family got this painting that the mc would stare at for like years until stuff happens and he’s smart again and really good at martial arts because of the painting even though he never trained

a while ago i started this manhwa but i forgot the name, it was about a guy mc who was reborn into a different body some years before and i think and he was in a game type setting where you level up with dungeons and stuff (but the dungeons don’t appear until later). but he needed money, so he bought stocks with this guy from america. and i remember that he appeared to look a lot older than he was so the american stock person was shocked when he found out the mc was in his teens. if any of you guys know which manhwa i’m talking about pls let me know, thanks