|Unlike the majority of mainstream Beruka builds, which focus on pumping her defense to obscene levels, this one instead holds a support role that allows her to give her allies a taste of her own tankiness. Be warned – because this is a buffing/support build, there are a lot of options as to what stat you want Beruka to buff.
Hagoita is the weapon of choice here – a prime weapon for those like its original wielder who prefer support roles. If you don't want to sack a NY!Azura, Groom Marth's Ardent Service can fulfill the same role, albeit with slightly different buffs. I personally prefer the Spur from Hagoita over the Hone of Ardent Service, but it's ultimately player preference.
Reposition and Bonfire/Ignis are standard parts of a Beruka build. The aforementioned specials are her main form of damage – that said, a Beruka built like this should be attempting to activate that Link skill as much as possible, and as such will probably not have many opportunities to directly initiate an attack.
Since the A skills are generally more about personal perks than ally buffs, any skill that bulks up Beruka's survivability will work here. Bracing Stance and Earth Boost are my two favorites, though Close Defense, Steady Stance, and Fortress Defense can work as well.
The B skill – the Link skill of your choice – is the key to this build. On her own, Beruka is an optimal Reposition candidate thanks to her status as a flier and her bulk. With Def/Res Link, Beruka can essentially activate Fortify Fliers buffs on anyone she wants. This, combined with the utility value of movement assists like Reposition, makes her a very potent support unit in of itself.
As this is a buff-based build, the C slot and Seals are extremely flexible and can be altered to enhance your team's strengths or patch up weaknesses.
Of course, depending on your own team needs, this Beruka can be repurposed into a mixed tank rather than solely Defense; this can be done easily by replacing all the Defense-related self boosts with Resistance.