well, in some VN's you have to finish all the available routes before you can do the last ones. i don't like that. the only time i do like that it does that is Little Busters!
Shine, could you update this one later in the day? The sheer amount of bugs are so astounding, it's unplayable. Just the first update alone, already fixed lots of them. The devs said that he'll update it again within the day. 星天の魔女 to v25.05.06 (debugging in progress)