So the manga is about a school boy and a "warlord" that gets reincarnated into the same person
the school boy uses his knowledge to earn money off of sugar I believe

Just an update on things I remember about it
-he makes money off of a little field where he plants sugar "roes" (not sure what they're called)
-he has a maid that sees him as a little brother
-his mother is some sort of martial arts expert
-he's also on good terms with a merchant (I think she likes him)
-he hires merchants to guard his field
-he fights the leader of an attack on the field and wins(ish)
-And i don't believe him to be older than 12

I know this might be vague but any help is appreciated

Last edited by ozzypothead at 7:03 pm, Jan 4 2016

Ah, I think I know this one. Isekai Tensei Soudouki ?

Yes it was.
thank you very much for the help