Quote Originally Posted by Semaphore View Post
Start with Ortylia, and have a second girl with a strong yellow skill. Wait until Ortylia accumulates enough SP to use her blue skill, then use it. After using it, swap her out for the other girl, who will accumulate a ton of SP from the effects of Ortylia's skill. Use that SP to spam her yellow skill until Naila dies. Naila has about 20 million HP on ultimate, but takes large damage like a raid boss.
That worked for the hell version. Thank you!