Some thoughts on the demo
For a girl to get captured she has to be reduced to 0hp and then attacked repeatedly for a loooong time, right now i don't see this happening organically unless it happens during a strong boss or a sequence in which you are forced into several battles in a row without time to heal like in amethyst when you fight all the soldiers at once in the lab, however right now all we got is the first stage monsters it will probably be easier for the enemies later, something i did observe is that when one of the heroines is at low hp all the monsters will focus her
Once a girl gets captured the remaining one gets a boost to all her stats and she has to find the room where the captive is, you can check the status of the brainwashing of the captive in the status screen, i dont know if only the time spent during battles, the sequences when you see the captive get attacked during battle, the time exploring in the map or all of it at once contributes to this status bar, it still takes a long time before she gets brainwashed
After you find the girl if she is fully brainwashed it will start a battle against her as boss in which you get preemptive attacked, she has her own boss attacks and everything, its super cool.
Btw when i tried to get Tangel captured, she got bugged and remained as a ghost party member with 0hp that got attacked by the enemies every turn, i would like to know if someone got Tangel succesfully captured and brainwashed
Regarding the heroines i think Alumina has a slight problem in which all her skills use TP, but she regenerates TP slowly this can screw her over sometimes, the TP regen accesory is practically mandatory for her, right now tangel feels a bit stronger, but alumina has the best skill to escape binds that does dmg to all+stun.
These are the methods i found to escape bastes in the demo, besides using the purification option at base, to remove the data gathering you need to destroy a server on the east side of the map, to remove the aphrodisiac caused by the pills the slime girls force you to take you need to gather pills from defeating enemies and then take them to a certain room to concoct an antidote based on the hints you find on some notes earlier, but this was impossible for with the MTL poetry of the notes and theres another hint saying that to remove lactation you need to let yourself get milked but when i let starfish milk them the status remained so maybe im wrong or it doesnt work right now
Maybe i sounded overly critical, but im very hyped for the full game and loved the demo.