Oboro

• Preferred IV:  +DEF or +RES / -SPD or -HP or -RES
• Weapon: Slaying Lance+ (+Def) / Tannenboom+ (+Def/Res)
• Assist: Reposition / Swap
• Special: Ignis / Aether / Bonfire
• Passive A: Steady Breath
• Passive B: Quick Riposte
• Passive C: Threaten Atk / Attack Smoke
• Sacred Seal: Quickened Pulse / Close Def / Resistance +3

In conjunction with her high defense, Oboro can run a Steady Breath set with ease, allowing her to soak up physical damage and retaliate with devastatingly strong special procs that will obliterate most foes. When Slaying Lance+ and Quickened Pulse are paired together, Ignis is the special of choice, which will allow her to fire it off after taking only a single hit. Aether is a welcome alternative, as it will always proc on her second attack and give her a welcome source of sustain. If she lacks access to Quickened Pulse, Bonfire would be the preferred choice, allowing her to still retaliate right away with a devastating blow—twice in fact if she is doubled.

Quick Riposte is instrumental to this set's effectiveness, as it guarantees she will be able to hit her foe twice in the case that her opponents are not instantly taken down by her special.    

Skills that dampen her opponent's offensive ability such as Threaten Atk are preferred in her C slot to make sure Oboro is indeed able to tank effectively. As with most units however, this slot is flexible, and can be swapped out for any Hone or Spur that her team requires.

One last worthwhile mention goes to opting to run some small adjustments to boost her Resistance. While she won't suddenly start tanking buffed mages, small tweaks can allow her to quite comfortably tank even speed-invested Fury 3 variants of Nowi, and return the kill. Switching her Lance's refine to +Res, opting to run a Close Defense or Resistance +3 seal, or using a weapon such as Tannenboom+ are all examples of viable tweaks. For context, a total of 6 extra Res (turning her neutral 24 res to 30) is all it takes to survive two hits from said Fury Nowi up through a +6 merge, before factoring in any external buffs or debuffs. Close Defense in particular is a great choice as it will also help with her physical matchups.
 

• Preferred IV: +ATK / -SPD or -RES
• Weapon: Brave Lance+
• Assist: Reposition / Swap
• Special: Moonbow / Bonfire
• Passive A: Death Blow
• Passive B: Drag Back / Lancebreaker
• Passive C: Threaten Def
• Sacred Seal: Quickened Pulse / Attack +3

Oboro's nice attack grants her the ability to run a typical Brave Lance set with decent effectiveness. The common combo of Quickened Pulse and Moonbow combines with an initiating damage spike from Death Blow to allow her to instantly delete squishy enemies, and safely retreat back to her allies with Drag Back. As an alternative Lancebreaker will allow her to quad strike tankier enemy lancers, as well as prevent doubles from those that outspeed her. If she manages to stick within 5 speed of him (such as by opting for a resistance bane), she can even deny the pursuit effect granted by an opposing Ephraim's Siegmund refine. 

Bonfire can be used over Quickened Pulse + Moonbow if the seal in unavailable or if one wishes to boost her nuking power on a second engagement or on a Lancebreaker quad strike. In such a case, an Attack +3 seal gives her the most reliable attack boost.

Threaten Defense makes for another nice boost, adding 10 additional damage, and up to 20 with Lancebreaker. Though of course, as usual, her C slot remains flexible and can be suited to fit the team.

It should be noted that while she can still pull off this set well, Oboro faces steep competition here from other lance units such as Donnel, Lukas, and Effie, who all boast higher base attack stats.
 

• Preferred IV: +RES or +DEF / -SPD or -HP
• Weapon: Berkut's Lance+ (+Res)
• Assist: Reposition / Swap
• Special: Iceberg 
• Passive A: Distant Counter
• Passive B: Quick Riposte / Guard
• Passive C: Atk Ploy / Def Ploy / Flexible
• Sacred Seal: Distant Defense / Quick Riposte / Resistance +3

A set tailored for Oboro's biggest fans, thanks to the weapon refinery she can utilize Berkut's Lance to great effect, absolutely stacking the hell out of her resistance while maintaining her respectable defense. When paired with Distant Counter, that transforms our fashionista into a quite sturdy anti-mage, sitting at an effective 41 defense and 44 resistance against enemy ranged units. 

To complement such resistance, Oboro takes Iceberg to deal devastating damage, rivaling that of her bonfire damage on her Steady Breath builds. Paired with Quick Riposte, the special will always go off on any enemy that doubles her, striking back with a deadly nuke.

As is the standard litmus test for evaluating high-resistance units, yes indeed this build has no problem tanking and dealing with the swarms of enemy Reinhardt, easily dishing back the kill. An Atk Ploy debuff even lets her easily take a quad hit, including two moonbow procs, from an enemy Rein that run Lancebreaker. Of course, be wary of taking this combined with cavalry buffs—while she is extremely durable, she isn't benefiting from a triangle advantage here, and is certainly not immortal.

If one is afraid of falling to special procs, Quick Riposte 3 can be swapped to the seal slot, and Guard can be taken instead. Be wary though that this will can severely lower her bulk vs units that weren't aiming to special burst, who focus more on raw attack or consecutive hits. On the plus side though, it will absolutely give her a safer time against other units with high special power or who may still chunk her pretty hard with skills like Wrath, such as Ayra or Nephenee.