The raw content extracted from the Fumiko No Kokuhaku DVD that came with the official art book, videos here are in the original quality that the DVD provided.

Every video from that DVD is available on this channel except for the last one which is just a still frame displaying credits. You can view it here: i.imgur.com/WAuIuuF.png

All credits go to the author, Hiroyasu Ishida, and his team.