 | Concepts | Duration of a Song |
| Achievement Series | Eager for Battle | |
| Show | ✅ | |
| Description | Listen to Robin’s singing ※ In combat, view Robin for more than #1 seconds in Real-Time Combat View after using Robin’s Ultimate “Vox Harmonique, Opus Cosmique” | |
| Reward |  5 |
Day #28 Cerydra sucks at rock paper scissors.