Oh, interesting, so it’s just a stylized textbox. I thought it was some cinematic timed subtitle system or something.
I wanted to try it, but the web demo has an error on start in Chrome v144.0.7559.96 (Official Build) (64-bit)
While running game code: File “renpy/common/00start.rpy”, line 279, in script python: File “renpy/common/00start.rpy”, line 279, in script python: File “renpy/common/00start.rpy”, line 1632, in <module> Exception: Could not set video mode. The game exited unexpectedly. More information may be available in the browser console or contained in the log.