Thank you for responding, to reply to your comment:
"Most of the JP playerbase dont read English"
Hence the question mentioned besides JP. And I didn't market my game in JP or Korea.
"Interactivity/Creativity/Story"
The VN is focusing on the story.
"lacking features of visual novel."
What are the features that missing?
"The no characters was intended."
This comment is unnecessary. Even the ads itself mentioned about having no character images and also it is stated in the game's page.
"Words are too small"
What is your resolution and which demo did you play? Browser or downloadable demo?
"No sound effects"
There are sound effects through out the vn, idk what you are talking about. Do you mean the sound effect of something being clicked and/or the sound effect of the words being typed/shown?
"Basic renpy UI"
Yes, this one is kinda true, I changed about 50% while let the other 50% stays as it is.