Finding a brand new release with accurate English subtitles is difficult because professional dubbing/subtitling takes 4-6 weeks. Here is the realistic status of SONE-448 subs right now:
Your best bet for experiencing "sone 448 english sub new" is to either wait 2-3 weeks for community translators to release a high-quality .srt file, or subscribe to a legal JAV streaming service that carries S1 titles with subtitles.
: .mp4, .mkv, or streaming embedded player.
