
I would just lie and tell everyone I was diagnosed with diabetes and that's why I smell sweet. And in case anyone thinks I'm joking, I'm not. Look it up it's a thing.

Haha usually its just their breath that smells sweet so it probably wouldn't cover up whatever is going on with our MC but this isnt a bad idea actually. Adibaby's comment wasn't making fun of people with diabetes or DKA or making light of the disorder. They were just showing how a medical 'fun fact' is applicable to MC's circumstances.

"I'm sorry I had no idea my parents were those kinds of people, it's so embarrassing" OMG Dojin I can SO relate. It humiliating and frustrating and there's nothing you can do about it. My awakening happened when I brought my caucasian boyfriend home and my parents lost their shit. I had NO IDEA my parents were so racist.

Can someone explain why the chauffeur was killed? What did that accomplish?

He was killed by the dad to keep the rival group (who the chauffeur had major public issues with since he was very protective of the heir) from actually doing anything against the heir. A sort of 'hey this guy died and everyone knows you didn't get along so it must have been you, so put another toe out of line and all hell will break loose' sort of thing. (hope this helps explain it)
No one can concentrate under those circumstances. So do you want him to study or do you want to fuck? Make up your mind.