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.
If you don't take this 
seriously, you'll end up—
إذا لم تأخذ الأمر على محمل 
...الجدّ، فسوف
Senti un po'... 
Se mi sottovaluti, finirai—
Se continuar me subestimando,
você vai acabar...
Слышь,