The Scorpion and the Centipeid

For as long as you can remember, you've been in anteiku. Your mother was a member before you, since she'd been child hood friends with Ryoko, though she had you when she was only young. You naturally worked at the coffee shop since you were thirteen, now you are a master of coffee making. One day a girl named Touka joined, as well as hero brother Ayato. Between these two new ghouls invading your home and a powerful ghoul faction threatening to burn it all to the ground, how will you manage to save everyone without loosing yourself?