I have managed to finish the end of Delphine's Discovery! You can watch the whole playthrough in this playlist: https://youtube.com/playlist?list=PLrYuc1W8SHq_yOvKGHVBq6pfQJPBN5BIJ
It was a mysterious and cute ride, with nice interactions between the two protagonist along with a lovely and practical ending. The story was lovely, along with investigation process that uncovers the mystery gradually. I love the VA! Though I thought it would be nice to have it more connected to the scene, in a way. Maybe more voice lines, or less voice lines in some scenes. Sometimes the voice lines popped up in random scenes, which confuses me a little, since it often did not seemed like important scenes.
Eitherway, it was a great experience and I look forward to your next game!