2 Nov 17th 2021, 7:14am It's already the second time. The first disappears when Tahabata's HP is 70%, and the second disappears the moment it is captured.
3 Nov 17th 2021, 12:14pm As of today, I went to Dark Poeta. Tahabata disappeared again while s-rank final boss Tahabata was being defeated. Again... again...