I have a question regarding the new event girl. How does her ability work? It says 20% attack up on first turn and the text that appears during buffing period is "Next attack 20% attack". And it seems it doesn't even stack with other attack buffs, so does that mean it's a one time buff? I can't seem to check if that's what it was because I had too many ranging numbers when she attacks. The wiki for the Japanese version doesn't mention anything so I'm wondering, does anyone here seem to know how it works?

It stacks with any other buff, it just vanishes after the first turn.
So it increases the initial burst but nothing after that. Cymbidium has a similar skill, which increases battle skill activation chance by 20% for the first turn.

Ah alright, kind of a shame really. Thanks for the info.