Responses
I think it's the girl who Boris couldn't save. Because he did nothing to save her, and regretted it, he chose to save Sehyun in the bathroom that day.
he was at tracy's grave who was the girl that got r@ped in frount of Borris's eyes but did nothing so she commit ╥﹏╥
Spoiler! Question
Whose grave was he at? His dad’s?