This was really neat and cool! Gotta love an unconventional use of an engine like RPG Maker. The game's blend of platforming/flight with one minute/hour time limits is something really interesting - a thought I had would be, could you make battles have to be completed in 1 minute or else you start taking more damage or something (as well as making battles factor into the 1 hour time limit overall)? That could be cool.
I really like the art and your black/white with hints of colour, it's really good and super stylistic.
I do have a couple bits that I think could be improved:
Sound design - more ambience/sounds outside the beeps and boops of UI buttons would be nice and would further sell the theming of your game. Perhaps calming/elevator music in the bits where you have infinite air to signal that you can relax a bit, whereas it could be more tense ambience in 1 minute air segments. But yeah, this game would benefit from a lot more sounds, chiptune and synthesized audio bytes and tracks would work spectacularly :)
Clarity - making it more clear where I can fly and where I can't, it was a bit confusing and having a 1 minute time limit added to the stress a bit.
More dialogue - I'm interested by this story! Please don't limit yourself in telling an interesting story by the 1 minute and 1 hour limits, as you can only show so much to the player in those times - perhaps dialogue could pause time, taking place in some kind of codec that all happens in a single second? That way you can really expand the story and what you can do in it - however you'll need to consider how cutscenes with moving characters would work.
More content - PLEASE FINISH THIS GAME! I REALLY WANT TO PLAY THE WHOLE THING. PLEASE FINISH IT, IS THERE ANY PLACE I CAN FOLLOW YOUR PROGRESS ON FINISHING IT? (Or if you need help with anything in the course of development, I hope that I could help out in any way?)
Good entry!