Cherry Teacher Sakura Naoki - https://vatoto.com/comic/_/comics/cherry-teacher-sakura-naoki-r19256
"Chapter 6" is just a 1-page ad for the scanlator.
"Chapter 7" returns only a "CDN NYC" page which, as far as I can tell, relates to the Content Delivery Summit that occurred in New York City last May. http://www.contentdeliverysummit.com/2017/Default.aspx