Just when I think I've figured out where this roller coaster's going, it throws me for an even crazier spin...
Spoiler for 48:
Nishimori is shocked to see Mika there, only for her to introduce herself as "Hoshida Miki". He's naturally confused, wonders if she just looks like her, and introduces himself as "Nishimura Satoru". They continue their date and every step it's obvious that she's Mika, but as he clings to the idea that the happiness he saw back at Taro's house is real he desperately tries to convince himself that she's just precisely identical, with the same mole, the same look, same mannerisms, same everything. He finally starts to break and accept reality when she tells once more the story about how she moved in high school because her astronomy-buff dad didn't like a neighboring building blocking his view of the night sky. Right as he starts to ask, she says that she really wants to try "that thing" they talked about in their chats. He agrees confused and as they ride along desperately tries to scan the old messages, only to find that everything but "Yeah I'd love to try that" had been deleted. He follows along as they go to a hotel, and to a room, and then she asks him to roll over on the bed, as she "can't do it" if he faces her. As he lies there struggling with his mixed thoughts, we see Mika strip to her underwear, and pull out some lotion and a massive strap-on. She talks about how she'd always wanted to try this, and asks if it's his first too, becoming happy that she'll be able to "have his first". He naturally freaks out as she reaches to pull down his pants (as the title "I'd die to have your virginity" again crosses the panel) and jumps back. She argues that he too had been real enthusiastic to try this, but he insists something that massive would kill him. As she says they'll go with a more "normal play" for the day he runs to the door. As she gags him he finally puts together what he meant by "we'll all suffer". He finally pushes her down on the bed, looking back over how hard he'd tried to bluff and hide his lack of resolve and how it'd led to something like this, and finally admits his identity and demands that she also stop the farce. Mika breaks down in tears, asking why he'd say the truth at this point, saying she wishes he'd just continue to lie just like "back then".
I seriously didn't expect this. I could see how it could happen, with all the frustration she'd been through. Still, looks like this time around it's largely about being honest with himself, admitting what he wants to do and be and actually going for it. He was wrong to obsess over being her first and only, yes, but that doesn't necessarily mean that she's better off without him.