| 2023-10-19 16:25 | Now marked as Not Bonus. |
| 2023-10-19 00:38 | Type changed from "Music" to "OVA". Rating changed from "G" to "PG". Start date changed from "2019-07-19" to "2019-08-21". Number of episodes changed from "2" to "1". MAL genre(s) removed : Music. |
| 2023-10-18 23:30 | Now marked as Bonus. |
| 2023-10-18 23:30 | Now marked as Not Bonus. |
| 2023-10-18 19:57 | Now marked as Bonus. |