Beware of Foreshadows

Okita is going through a selection of sweets at the cake shop. As Okita leaves the store, a girl suddenly comes up and stabs him!! Calling Okita her father’s killer, the girl’s action seems to be fueled by a past case called the “Rokkaku Incident.” What is the connection between this incident and Okita, as well as the girl’s father? And more importantly, what’s the fate of Okita who’s been stabbed right at the start of this episode?!