Big Sister, Do I Have to Go to School?

Null & Peta · Episode 3 · “Big Sister, Do I Have to Go to School?”

The story of NullPeta follows Null, an elementary school girl who is also a genius inventor. After her older sister Peta's death by an accident, she brings her sister back to life as "Peta Robo" using her characteristic knowledge. However, the robot sister is a little different from what she used...