Nanatsuya Shinobu no Housekibako

This year's December issue of Kodansha's Kiss magazine revealed on Thursday that Tomoko Ninomiya's Nanatsuya Shinobu no Hōsekibako (Nanatsuya: Shinobu's Jewel Box) manga is going on hiatus due to the author's health.
The manga was slated to have a chapter in the issue, but the editorial department specified that Ninomiya has not yet recovered from an illness, and so writing the manuscript was difficult for her. The editorial department apologized to fans who were looking forward to the new chapter, and stated it will reveal in the magazine and on the magazine's website and social media accounts when the manga will resume.

https://www.animenewsnetwork.com/news/2018-10-26/tomoko-ninomiya-nanatsuya-manga-goes-on-hiatus/.138670

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