I have some guesses when connecting some points together, these are:
Point 1: It seems that Asuna has already been corrupted by Oberon in SAO, but someone somehow did something so Asuna doesn’t remember this experience (maybe to protect her).
Point 2: There is a patient room in hospital specifically for Asuna. This room is not well-used for now but should have a purpose (otherwise why put a room there).
Point 3: Antennas is being widely equipped everywhere in the city. For sure it will influence people’s brains but for now not sure how.
Point 4: There has been more than one case where Asuna is brain-empty when being fucked by Inoda, like she literally doesn’t know what she is doing. At least two cases I can remember: In the kitchen Inoda says something about Asuna being unconscious, and in the church this time.
My guesses are:
Guess 1: This brain-empty status is a protection mechanism purposefully planted by someone (like her father) in the hospital room due to Asuna’s corruption experience with Oberon. It's a way to protect her so that Asuna can live a normal life after SAO.
Guess 2: Unconsciousness will be triggered when Asuna is excited during unfaithful sex conduct.
Guess 3: Antennas will alter this protection mechanism, like shut it down, which will speed up Asuna’s corruption and make her become even more lewd IRL.
If these guesses stand, we might see the following things in future updates:
Possible 1: Kirito finds out something (such as Asuna’s brain surgery record) in Asuna’s patient room in the hospital.
Possible 2: In future sex scenes, Asuna is more likely to be unconscious when having intense sex with Inoda, so Inoda can take advantage and do crazier things to her (remember Asuna is unconscious when Inoda changes the position, makes her clean his dick and swallow his cum in the church)
Possible 3: Antennas changes the brain-empty protection mechanism. Asuna becomes less hypocritical (this is what many people feel about her now), becomes more honest with her cheating sex with Inoda, and craves for more sex IRL.
Of course, these are only my guesses. Maybe Asuna’s unconsciousness is just a way how Fujino shows Inoda being good at sex. A clichéd narrative method in NTR games.
