Stuck...

What about your other swords?... There's a concern about insufficient firepower if Mikazuki is the one with the attack special skill when challenging the event's Great Oni. Ran can buff the whole team, but be aware that Ichigo's buffs, other than the barrier, only apply to himself and Wakizashi/Tanto. If you have characters with 'Medium' or higher special skill power, it might be better to substitute them even if they're not fully trained. For an attacker paired with Ichigo and Ran, Saya deals the most damage. Yagen might be the next best option? These are the equipment scrolls I personally recommend from the image.

It's more effective to level up your sword boys than to use ema! I'll post the clear party. I choose ema based on feeling~ (It's possible without the fox ema too)