Here are episodes 3-7.
I separated the documentary from episodes 1 & 3, and i only found episodes 4 & 5 that were split into parts.
4-7 are in low quality.
This is all that i can find.
I found them on here... https://v-s.mobi/6hp-six-hearts-princess/long
If episodes 4 & 5 are not complete, please let me know so i can delete this.