POST-278 - GF seeking ED cure for BF gets 'erection tested' by the doctor

It's hard to tell if she's doing it reluctantly because it's an 'examination' or if she's just getting turned on because it's been a while since her boyfriend has ED, but that sense of being swept up in the atmosphere is so arousing. I haven't seen her in other works, so she might be exclusive to this one. Also, the fourth girl is a bit feisty and guarded, but she still ends up moaning, which is great.