Hello...I am new, but I have just finished this wonderful game. I wanted to share what I thought happened...here goes...
Madotsuki is a deeply troubled girl, as we all can figure out easily. She absolutely refuses to to enter the real world, because she just can not handle it. So she does what she can to not go completely insane...she dreams. But she can control it enough that these dreams are like a fun game were she has the power of magic effects, and the freedom to murder those she so wants to. Although her troubled mind litters this game with disturbing characters, dark/depressing scenery, she perseveres, and adapts to these things, so they become normal to her. She begins to love this world to the point of obsession. This is the only world she now knows to be liveable to her, besides the mundane video game she plays when sleep is not possible.
As with any game as a true gamer knows, you want to beat it, you want to complete the task at hand. Well, she does so, collecting every effect that she can in this world her twisted mind has created. She finds she has done what she set out to do...what now? She realizes, its all over. This game she has played and made her life is complete, and now over. She also realizes the complete picture of what her mind has created...she can't take that, nor can she take the fact that it is now all over.
So in her madness, sadness, and insanity for what she created...and lost...she jumps from her building in the reality that she refuses to have anything to do with, because the game is now over...