I did not even think as I returned a slap to her face. In an instant, a burning red handprint was imprinted on her face.
Even my own parents had never beaten me, who did she think she was?
Perhaps it was because she was used to my gentleness and weakness — the biggest fight we ever had was still limited to mocking and insults between the of us — so this ended up steeling her resolve to slap me. However, she had never thought that I would suddenly become this ruthless. Her expression quickly changed. She looked like she was in disbelief.
Of course I had to hit her. I was still troubled over the things that happened these few days. It was her own fault that she bumped into me and ended up as my punching bag.
I originally thought that she would come to beat me up in fury, but much to my surprise, she ran behind me and began sobbing.