Transform Back Difficulties

[Silverthorn]

edit: oh boy, double-ninja'd.

Okay, I investigated a bit further. Hitting DJA simultaneously lets Rudolf transform to the character, but for him to transform back, you'll have to sequentially press the keys unless you are Louis.

Originally, I thought that you could DJA with any character having an attack on that combo but neither Henry, Rudolf(!), Julian, nor Firzen* allow that kind of input; it'll always have to be D+J+A.
*I tested both cases, Firzen as an opponent and Firen+Freeze fused. Fun fact: you can unfuse Firzen by pressing DJA; he'll defend first and after that split up again.

My guess is that Louis has a special mechanism in order to handle the "execute only if hp lower than X"-condition. For that, I ran two tests:
1) set every

hit_ja:

in louis.dat to 235 (phoenix palm). Irregardless of the hp-value, he'll execute it the same way as D>A.
2) press DJA with Louis once and keep receiving damage afterwards with no key presses. As soon as his hp fall below 33%, he'll transform automatically.

Tl;dr: magic