After finally admit married haruna and nagato (and other shipfu) have no sufficient fire power to significantly damage BB hime in boss node, i resort to send out musashi for few times before my oil count blank, with hayasui of course.



1st fleet:
for e4 hard, you need MINIMUM Nagato-class or equivalent in order to significantly damage hime BBs. Kongou is too weak for it.
Under this formation, once passed the night battle node, the fleet is pretty much safe from air battle node.I myself only retreat from both air battle node 3 times during the whole e4 sortie.
Remember to arm hayasui with DAMACON as she is very very fragile.


2nd fleet:

Yukikaze in 1st node to maximize her night battle potential. Even with only single quint torp, she can taiha battle hime with 530 HP. And that make the 2nd fleet much more safe and higher chance to end the suffering; also, she in chuha mode still can sink chuha BB hime in night battle.

Abukuma: The only CL you can equip kyo-hoteki.

Myouko: You will need cut-in ASAP to put BB Hime into taiha mode, otherwise kiss goodbye to your resources and sanity. I don't equip with torp setup since i have no enough of them.

Maya sama in 2nd fleet too. She can use both air and night battle CUT-IN with the setup which is enough to wipe off taiha BB hime to reduce the chance for RNG trolling

Super KTKM a.k.a. ultimate weapon: As usual, put her in last; once bb hime spare her alive, chance are you can end the sortie once and for all.

Other node:

1)In hard mode, if in BB Hime night battle you had 1 taiha shipfu, do retreat. High chance that you cant finish the last dance.

2) Use only shelling support on boss node, had tried aerial support for few times with either blue or redplane but only able to produce 30-50ish damage.