What what!! WHAT'S GOING ON!?!?! 11th time what??

Dirty dead?

August 25th was the first diary entry with no text. It matched the number 1 on the calendar on 8/25, when he was first raped. The other dates and occurrences also matched. So Dohyun deduced that Sungho was doing this out of revenge. There were a total of 19 diary entries or 19 rapes. Since the latest number on the calendar was 8 (marked on September 2nd), Dohyun had gone through eight rapes. There were eleven of them left.