DPS Kamisato Ayato focuses on doing large amounts of on-field damage with his Skill and Burst.
Try to activate Kamisato Ayato's Burst before using his Skill to maximize his Normal Attack DMG. Getting enough Energy Recharge for this is important, and varies based on team. Since the casting time is so long, it may not be worth snapshotting into buffs.
The amount of slashes Kamisato Ayato can do during an Skill window is sometimes influenced by the player's set FPS.
Regarding Weapon Choices:
Skyward Blade: This ranking assumes Kamisato Ayato needs 135% Energy Recharge to use his Burst every rotation. Its ranking changes based on his Energy Recharge Requirements.
Summit Shaper: In teams where ATK% buffs are scarce, this weapon has the potential to rival .
Finale of the Deep: If you can reliably clear the Bond of Life, this weapon is better than the weapons ranked equal to it.
The Black Sword: At [R5] this weapon is roughly equal to .
Lion's Roar: In Electro-Charged teams, this weapon performs about equal to .
Harbinger of Dawn:Only recommended with a shielder. If shielded, this weapon is better than and can rival in teams with high amounts of ATK% buffs.
Regarding Artifact Choices:
Sets
Nymph's Dream (4): Reliant on Kamisato Ayato's Water Illusion hitting enemies which can be inconsistent against some content. Without the third stack of the passive, this set becomes about equal to +18% ATK set (2) +15% Hydro DMG Bonus set (2).
Blizzard Strayer (4):When run in a Freeze Team, this is Kamisato Ayato's best set. Note that it is not recommended to farm specifically for this set.
Thundering Fury (4):When run in an Electro-Charged team, this is Kamisato Ayato's best set due to the Cooldown Reduction on Skill allowing for shorter rotations. Note that it is not recommended to farm specifically for this set.
Echoes of an Offering (4): The performance of this artifact set is inconsistent, and is based on user ping and other factors. It is not recommended to run this set unless your ping is consistently below 100. If you can achieve this, (4) is competitive with (4).
Marechaussee Hunter (4): If Kamisato Ayato is used in a Burgeon team where he consistently takes damage, or with Furina, this is his best set.