This should be the first time the two normal-worlders interacted, right? Or am I misremembering?
Because I've been waiting for this to happen for so long, and it's just... this.
Nope, both the girl (Ichikawa) and the boy (Urisugi) from the normal world have talked with each other in Chapter 21.
The girl asked the boy what the other Ichikawa is doing in the normal world, to which the boy replied that horny Ichikawa doing the same thing as Urisugi now, finding someone perverted to have sex with.
The boy told her that the horny Ichikawa approached him and they had a lot of sex.
However the horny Ichikawa only had sex with him since she tore her hymen and it hurt so much when they did it the first time, given that only the minds are switched between worlds, the body remains the same.