Anna's POV:
When Mark asked me what happened last night, I didn't tell him the truth because he didn't do that intentionally. I just tell him that he is unconscious and acted normally.
Later, I came to my room, finish my bath, and sat on my bed to relax but my thoughts are revolving around what Mark said last night, "Anna don't leave me alone.."
Then I remember what Tom said about drug symptoms, i.e, outburst their emotions. It means Mark feels that he is alone. Yes, actually, he is alone; he lost his family and it's been two years since his parents' tragedy takes place.
For Ria, it takes so much time to overcome from depression but for Mark, maybe he is 23 or 24 of his age when his parents died. He needs to take the entire responsibility of his family and business and he acts normal before Ria to make her happy, but he actually not, he was pressured and depressed.
When he recovers from his parents' tragedy, he lost his beloved sister.
