Thank you for the criticism. The game is still in early development, and the only route available is Asuka's route because our patrons chose her in the poll (this is not the main storyline). We are working on having a route with basically every character in the game. Asuka's route took a lot of time to make because she will be a key character in the main story plot, but right now her route is done. The next update (0.6) will include a fragment portal that unlocks a different reality in the nexus. That portal feature is to include characters that wouldn't fit into the main storyline.
We understand that a lot of people feel like there is nothing to do besides Asuka's route, and that is because Asuka is the only character with a full route right now. We are still working on the game; it has been less than a year, and we want to make every character interesting and explore different stories. Not just put them all together and make a menu to talk to them and fuck them whenever you want without any character development whatsoever. Most of Asuka's tasks are triggered on Saturday, which is true; that is because of the plot on her route, and in the future, it will be an incentive for the player to go after another girl. Right now, it feels empty because there are no more girls available. But that is changing with more updates. We haven't reached our Patreon goals, and we cannot work on MHF full-time yet, but we are doing the best that we can to not compromise quality and make updates as often as we can.
As I said, the next update will include a FULL route with a different character (available on the portal), and we are now working on 0.7, which will start Power's route (Power was the winner of the patron poll for the next character route). We are also trying to fix as many bugs as possible with each update. When 1.0 finally comes out, it will look VERY different from now.
We understand where you are coming from, and it is fair and valid, but just keep all those things in mind.