Here is all I can remember: •Magic world •Twin girls- on that world twins are considered evil and so they hide one that had less magic potential, and raise the other •When the twins reach 5 (or 8) they are going to abandon the girl in the attic, or kill her. The night before that happens, she dies, gets a transmigrator. •The transmigrator sees books on magic around her and reads them to keep from feeling hungry. Then she notices as soon as she reads about magic she understands how to do it and awakens the magic dormant in the body. •Neglected transmigrator girls breaks free by herself after learning magic, and sees there is an animal being caged and going to to be killed, so she promises to save him with her when she leaves tomorrow. I think the animal turns out to be a dragon •There is a spy working in the house.. he helps with getting the girl away the next day. •Oh! The books taught her how to teleport and do force fields Any help is hugely appreciated!
I figured it out: Mezametara Chikashitsu!? ~Tensei Shoujo no Yume no Saki Still don't know what it is exactly, but it has mixed reviews so wish me luck!