The following is a list of episodes of the Onimai: I'm Now Your Sister! anime series.
| No. | Title | Original Air Date |
|---|---|---|
| 1 | Mahiro's Confusing New Body | January 5, 2023 |
| TBA | ||
| 2 | Mahiro's Time of the Month | January 12, 2023 |
| TBA | ||
| 3 | Mahiro's Close Encounter | January 19, 2023 |
| TBA | ||
| 4 | Mahiro's New Friend | January 26, 2023 |
| TBA | ||
| 5 | Mahiro Discovers Adventure and Social Gatherings | February 2, 2023 |
| TBA | ||
| 6 | Mahiro Goes Back to Middle School | February 9, 2023 |
| TBA | ||
| 7 | Mahiro's Role-Playing Game | February 16, 2023 |
| TBA | ||
| 8 | Mahiro's First Girls Sleepover | February 23, 2023 |
| TBA | ||
| 9 | Mahiro Rings in the New Year | March 2, 2023 |
| TBA | ||
| 10 | Mahiro Ponders Boobs and Identity | March 9, 2023 |
| TBA | ||
| 11 | Mahiro Pretties Up | March 16, 2023 |
| TBA | ||
| 12 | Mahiro's Future as a Sister | March 23, 2023 |
| TBA | ||
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