Girl genius "Null" has just lost her beloved big sister "Peta" in an accident. But don’t you worry! She’ll just use her naturally gifted intelligence to bring her big sister back as a robot! But is her newly-revived big sister just a little different than before? It’s time for the wacky comedy hijinks of little sister "Null" and big sister robot "Peta"! "Big Sis! Your plug fell out of the wall!"
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Reina Ueda
Peta (voice)
Azumi Waki
Null (voice)
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12 episodes • 2019
| # | Episode | Air Date | Rating |
|---|---|---|---|
| 1 | Sister Complete! | Oct 4, 2019 | 0.0 |
| 2 | My Big Sister’s Perfect Food! | Oct 11, 2019 | 0.0 |
| 3 | Big Sister, Do I Have to Go to School? | Oct 18, 2019 | 0.0 |
| 4 | Big Sister, Do I Have to Go to Space? | Oct 25, 2019 | 0.0 |
| 5 | My Big Sister Is Dead?! | Nov 1, 2019 | 0.0 |
| 6 | Big Sister, What’s Your Favorite Snow Cone Flavor? | Nov 8, 2019 | 0.0 |
| 7 | My Big Sister’s Acting Suspicious?! | Nov 15, 2019 | 0.0 |
| 8 | My Big Sister’s Bugging Out! | Nov 22, 2019 | 0.0 |
| 9 | My Big Sister’s Brutal With a Hammer! | Nov 29, 2019 | 0.0 |
| 10 | I Think of My Sister, Therefore My Sister Is | Dec 6, 2019 | 0.0 |
| 11 | Big Sister, Big Sister, Big Sister! | Dec 13, 2019 | 0.0 |
| 12 | Null and Peta | Dec 20, 2019 | 0.0 |
