Good job for a first jam! Personally, I am not a big fan of visual novels, but this one was interesting to play (with an amazing twist)! Here are my suggestions:
1) Maybe it would be nice if the player collected all the information they received in some kind of notepad.
2) Maybe you should develop the theme more deeply, because now I don't feel it's implemented (but it's ok)
3) Maybe add different endings and motivate the player to find them all!
Anyway, good work!