This is issue 3 of "The Secret" by the Artist Swainart. This gallery contains the inked versions of the pages while previously only sketches were available. Pages or panels in sepia are flashbacks. Art commentary can be found on the artists page.

Previous Chapter: http://e-hentai.fbk.tokyo/index/g/1475329/570c2f4785/

Artists Page: https://www.zff.co/BhvcA or https://viid.me/9Mw5g

Swain says issue 4 is going to be unfortunately delayed. Also keep in mind he will be posting sketches of issue 4 on the /co/ board of 4chan at a later date.