Firstly, visual art is impressive. I've played several times and reached all endings. I like to be a happy end because mostly, all endings are a kind of bad end in such games. As a subjective opinion, although this is done to draw attention to some points, not achieving a satisfactory ending in a game reduces my motivation. You balance this very well! Also, the ambience of the game is very successful in empathizing with the character. Inspiring, great job :)