|Oboro, Hinata, and Takumi all shared the experience of defending the great wall of Suzanoh against Nohr. Because of that wall her beloved Takumi defended, she swore to be a wall even more capable, a wall that will not fall, many enemies throwing themselves at her; to no avail. Access to pass this Oboro? Over her dead body, which won't happen, no matter the enemy. This can only be achieved with (at least) ok Hp, which she has, extroardinary defense, which she also has, and untouchable resistance, which she needs work on to have, in any circumstance.
The Wall of Suzanoh can be put in any mode, and work just as effectively. Her ivs somewhat fix her bad resistance, and her speed is unfixable and unnecessary, so it can have a minus iv.
Her weapon, Berkut's Lance+, helps her with her resistance problem a little bit. Swap is good on her, so she can get an ally out of, but herself into, an enemy's attack range. That assist is tailored to this kit. But, the standard reposition (or draw back) is also ok. Her special should be focusing on her strongest point, defense. Ignis for more damage, bonfire if the player wants it to happen more.
Now, her A, B, C, and S slots. Her b and c slots are very flexible, but Seal Attack 3 will work well as those enemies relentlessly throw themselves at this monster, she can't double, and she doesn't have the attack to one- shot them. So battling multiple enemies at once with this Oboro can start to wear her down, but with seal atk, even after they attack her for little damage, there atk lowers. Renewal can also be run to keep her alive. Threaten atk and atk smoke are really the only options working towards her being the almighty Suzanoh wall. That would be lowering her enemies' attacks. Smoke is more expensive than threaten, but in more situations than not, works better. Now, these two parts along with her weapon are the jewels of this build. In the a slot, Close Defense 3, and as the sacred seal, Distant Defense 3. This means when being attacked (and for an enemy phase unit, that isn't too uncommon) at any range, she gets +6 defense and +10 resistance. When being attacked at any range, not including seal or threaten or smoke attack, her Hp/def/res is 40/45/38. She really has become the wall that will now protect Takumi, especially with those stats...