This game is excellent, the graphics are amazing, genuinely some of the best I've seen in a pixel game. The level of detail is so high and the animation is incredibly well done

Two points that drag it down are the grammar and the sounds

In a horror game, sound is one of the most vital, if not the most vital parts, and while moments of quiet are necessary, this game has to much of it. There is no ambient noise and it drags you out of the moment. Outside there needs to be the sound of nature, birds, wind (pivotal moments would be best, like when a spirit appears), inside the train I'd boost up the sound of her footsteps, add some echo and creaking noises. During the chase scene with the spirit, there is no difference in sound and thus no change in mood

The grammar is in need of editing, there are moments where lines repeat, where points don't make sense, generals errors and areas where things could be better worded. Majority of these issues are easily fixed, but will increase the overall tone and flow of the story

I'll continue to follow the game and look forward to seeing how to will progress

Edit: Also, watched some do a playthrough of this and I'd like to suggest something

When you put the ring on the hand, instead of having it just sort of disappear, I thought it would work better if it dissolved into dust. Unless it's all in Saki's head, it doesn't make a lot of sense for a dead hand that was perfectly corporeal a minute ago to just disappear into thin air