Well...
Had an experience with Parc/Asiana, may years ago.
Parc use to be top of notch, don't know about nowadays. Asiana is a good airline, though you'd have to adapt to their cultural values and way to do things. There's plenty of material to study here.
Standards are pretty strict and you are required to have a humble and nice attitude. Expect to be fairly treated.
Upgrade to left seat is highly improbable, but who knows?
Seoul is a quantum leap on whatever you could have in India. Absolute first world metropolis.
Good luck!
FF