Based on Tanner's investigation report, Calamity learnt that Mr. Foster's disciples came to the academy earlier that day because they got the wind that Calamity was once working here, so they came to know more about Calamity's background. Simon thought they were coming to take offenses, so he started to fight with them.
Calamity was surprised and asked, “Simon is not impulsive at all. If they were coming to know more about my background, he could simply brief them. There's no reason to have a fight with them.
Tanner shrugged her shoulders and said, “Who knows? But...” Tanner looked at Calamity and continued, “People are not blind. Everyone could see that he is in love with you. We should avoid him this time.”