Okay, I tried it again, I think I got the ending? (the part where you turn back to face Meguri and have some dialogue which eventually gets stuck at the line "Through everything, I still thought she was shining brightly.")
Found a couple more bugs though, if you die while trying to input the password, the input window never closes but remains on screen; it can't be interacted with and just obstructs the view. And in the final dialogue, there's a line where the text reads "set Meguri meguriColor_6", and a line where Meguri says "meguriColor_7".
Quite good overall though!