(CR) As a Reincarnated Aristocrat, I'll Use My Appraisal Skill to Rise in the World

[Huh...?]

Originally Posted by Strahan

He has, mentally, over forty years of life experience; you'd think he'd be a little more composed.

Composure differs for every person depending on situation.
Even a 50-60 years would get flustered, if they suddenly know that the person with whom they were interacting with and thought to be a girl, was actually a man in disguise.
And later than same person puts a knife on your throat.

And i see people always conveniently use the age factor whenever they feel like it.

Yeah, he is a person who incarnated after he died in his 30's. But his body is that of a young boy.
Even if he has his old life memories which does help him in some situation, you have to remember that the minds processing capabilities is different for an adult and a kid.

It's like installing a heavy software, on an weaker system, while it would work somewhat, it would still have many issues.

[Frontier]

At this point I just forget he's reincarnated from Japan .