This challenge stage is relatively straightforward without any unique mechanics to worry about, if you can burst down both S.Miyako and S.Saki quickly. However, for newer players, there are 2 skills to look out for the first being Moe’s AoE attack, which can deal a respectable amount of damage if your team is weak to her DMG type, then S.Miyu’s EX Skill can even pose a threat to high-level support students like Ui.
Another minor thing to take note of is S.Saki will come from the crates to the left, this may pose a threat to the student closest to her if they have Light armor. To deal with this you can reposition a student closer to S.Saki allowing the damage to funnel towards them.
For this stage, you will want to focus on bringing Singe-Target Piercing damage dealers as both S.Saki and S.Miyako have Heavy armor. For newer players, we highly recommend having a healer in the team, if you have Light armored students in the team. But for players with well-invested Mika and hyper-carry buffers, you can easily one-shot both S.Saki and S.Miyako.
Note that characters listed here are only some of the viable options