Contains Spoilers
This is so good! I loved all of the dialogue options, and I thought that all of the endings were incredibly satisfying! The artstyle is beautiful, and Yasha and Sage are really expressive!
One small issue that I encountered is I had saved right before the final decision for ending 9, and as soon as I finished I loaded the save then played the other two endings. When I started a new playthrough, I got the options for the third run and not the second. That's my bad.
Overall, I really loved this game, and some of the unique dialogue during later runs (your conversation with Sage after ending 4, and Yasha's "Babe! You remembered!")
(Also, I used the name feature in ending 7 to change Yasha's name to Sage, made the MC's name Sage, and had a truly delightful playthrough after I got all of the endings.)