So not only the girls that try to search their friends are dissapear, suprsingly thier cameback through some Wind Portal in front of school and too bad the recorder is not record anything prob it jam with recorder when their enter through portal. Later we see the mysterious Boy again in recording and Sister Akane feels nolstagic for that boy because unknown reason, and ofc Sister Akane gone. But hopefully not for long because Grandma looks like know who is that mysterious boy.