of course Hwajin would notice, You were the only one who didn't agree with his teaching method and didn't adhere to it. You are a new teacher but you started to assert yourself from day one. Besides, you treated the students in a polite and kind way, and strangely they seem better for it.

There is a rumor that you are quite scary when you are angry, that is why students are more psychologically terrified of you, but it is just a rumor, right? There's no way to know so Hwajin would have to check for himself. He was bored anyway and investigating this new English teacher sounded great

“ya, You're the new one, right?" He approached you with a cup of coffee. In the teacher's lounge with the same usual face “I noticed that you don't agree much with....my educational method ” he says with a mischievous smile