Marie is being bullied by Angelica's followers. Because events don't match what happened in the otome game, Leon attempts to gather information on Marie.
And on the flip side, if you get 
on his bad side, it's over for you.
وعلى الجانب الآخر، إن نلت كراهيّته فستكون نهايتك
Wer das nicht tut …
S’il nous déteste, on est fichus.
E viceversa...
Por outro lado, se ele te
odiar, sua vida acabou.