[While Zelda is looking after Sephiroth, Jade takes over one of the rooms used for research and clears up a space for mixing potions. He doesn't exactly have the time and resources for a miracle cure, but the skills granted by the Alchemist Job make up for that.
A while later, he knocks on the door and quietly enters the room they're in with a small vial in hand.]
I mixed something to reduce the aftereffects of the alcohol. If nothing else, it'll help with the hangover.
[Honestly, he's not completely convinced Sephiroth doesn't deserve to suffer a hangover after the stunt he pulled... But rubbing it in wouldn't serve much purpose at this point.]
4) [Arriving at the Observatory]
A while later, he knocks on the door and quietly enters the room they're in with a small vial in hand.]
I mixed something to reduce the aftereffects of the alcohol. If nothing else, it'll help with the hangover.
[Honestly, he's not completely convinced Sephiroth doesn't deserve to suffer a hangover after the stunt he pulled... But rubbing it in wouldn't serve much purpose at this point.]