both deal with the subject of law, but law school definitely has law as its main plot compared to the devil judge, which has law as its subplot.
basically same thing goes for s2. please, just watch the first two seasons before you watch the third season. i personally liked s2 better than s1, and the smaller duration of eps is better too so you won't get bored as easily. thank you and goodbye
... i recommend you watch this before you watch s3 just for context... it's basically the first season of the series, and if you watch this before s3 you'll understand the characters' more and the plot will make more sense to you than watching s3 before s1
it is similar in the aspect of the female lead (han so-yeon)'s facial blindness, the male lead in rich man also has the same condition (prosopagnosia) and so the romance is alike in some senses due to that