Giving simple tips i found when farming for kokomi. hope it helps.
good luck on the ayato banner
0:00 Tip 1 use cryo for slimes
0:46 Tip 2 use shield at this phase
1:10 Tip 3 Team Elements
1:25 Tip 4 Easy Entrance Location to Hydro Hypostasis
2:22 Simple battle
defeating hydro hypostasis easily
location of Hypostasis