The Hinagiku single should be available around the globe on streaming and digital download platforms. If you want, I can upload the single (I didn't find a working download link when I tried a search just now). If you just want to hear the song and see the PV, the video has been uploaded
on Vimeo.
Hinagiku and Twilight Dreams are the latest songs she's released. A new song titled "End of the world" has been announced, but no word about a release yet.