TLDR: Ayano is an overall A-tier unit but is necessary in multiple PvE bosses as she is often the highest source of pure single target PDmg. She significantly increases in power for players with P2W artifact Devilgod's Stare.
Ayano's kit revolves around 2 primary mechanics...her ultimate skill, and her every turn passive damage skill, both of which are random single target. This makes Ayano very RNG based, and there is no way to make her more reliable. Where she thrives is vs single target bosses who are vulnerable to PDmg, and don't prevent critical hits via the Armor stat.Ayano is one of the highest dmg units vs Spirit Beast Azure Dragon, Ancient Battlefields Valkyrie, and to a lesser extent Goblin of Magic Guild Boss. Due to this, most players should build Ayano eventually, even though she performs average to poorly in other areas of game play.
Mystic Tower: Honor Keep
Ancient Battlefields: Valkyrie/Amaterasu
Spirit Beast: Azure Dragon
Parallel World Boss: Mirror Ibaraki-dōji
Ayano's weapon is good for generically increasing her damage against certain bosses (such as Azure Dragon or Valkyrie), but isn't overly reliable in other game modes as the stacking CDMG buff resets when she is hit. This weapon should be built when trying to progress the aforementioned PVE boss fights.
Awakened WeaponAyano's awakened weapon will add small ATK% increments and once reaching +30 will add a damage bonus against targets who are above 50% HP. This will make Ayano's 1-shot potential even higher in PVP, and increase her total damage against PvE Bosses.
Ayano is a very necessary unit for F2P to establish a strong presence against bosses weak to Physical Damage. Building her early may not help you very much in story grinding or PVP, but it will progress you through necessary boss battles. Build her and invest in her when you want to tackle Spirit Beast Azure Dragon and Ancient Battlefields Valkyrie, among other PvE boss battles. Ayano should be run on the Incantation F2P gold artifact without exception.
Ayano is not a very strong PVP unit for whales, but she is a necessary unit against bosses weak to Physical Damage. Building her early may not help you very much in story grinding or PVP, but it will progress you through necessary boss battles. Build her and invest in her when you want to tackle Spirit Beast Azure Dragon and Ancient Battlefields Valkyrie, among other PvE boss battles. When she is fully built to include awakened weapon, she might have a reasonable high right of 1-shotting units on turn 3 of a PVP fight, but she won't see much PVP action unless you just don't have better options. Ayano should be run on the Devilgods Stare artifact without exception.
|Casts 2 Strengthen effects on self, increases self's Crit Rate by 50% and Crit Damage by 80/100/120/150% for 2 rounds.
|Deals 130/160/190/240% ATK as Physical Damage to 1 random enemy and casts a Weaken effect on the target, decreases the affected target's Speed by 50% for 3 rounds.
|Increases self's Speed by 10/15/20/30%
|Deals 60/80/100/130% ATK as Physical Damage to 1 random enemy every round.
|Curse of Blood
|Increases self's ATK by 5/7/7/10%. (+20) Accumulates self's Crit Damage after every self's action by 25/35% (Maximum 100%). This buff will be reset to 0 after taken damage.