Akira, I understand where you are coming from! I dropped the Adobe subscription exactly 2 years ago, but I do have older versions of Photoshop, CS5, CS6. In order to continue using old photoshop and ACR, (also PS Elements,) I purchased MetaRaw on The Plugin Site. This allows you to open a NEF file in 3 ways. First, it can route through the older ACR version, if it still supports the camera. Second, it will use the latest DNG converter and open the converted file in ACR. Thirdly, it will use the MetaRaw converter, which I believe is based on DCRaw and open into Camera Raw (as an editor.) Metaraw converter and DNG converter is kept up to date by the author. The output from the latter is very much alike what you would get with Camera Raw in CC. If you do have an older version of Photoshop or Elements, this nifty plug in will give you what you are used to working with. All operations are, automatic, seamless and quite snappy!
MetaRaw conversion with slight adjustment of highlight slider in ACR (as a filter.)