According to a scan of this month's issue of Monthly Afternoon
, manga Nazo no Kanojo X
will be ending in the magazine's next issue with 92 chapters. The final chapter will be released on September 25th.
The series was previously adapted into a TV anime
in Spring 2012 and an OVA
episode was later bundled with the manga's ninth volume. Volume 11 of the series was published last February.