...I would like to say that the plot feels contrived, but having actually seen (and interfered) with something close to this IRL, this chapter hits a bit close to home.
Pro tip: if you can't understand a line you just translated, 1) nobody else will either 2) you have probably made a mistake somewhere along the line, fix it.
It's obvious he is going to blackmail her and she is going to accept sleeping with him(which is stupid in itself because it shouldn't matter if she once hitch hiked in his house and slept with him but whatever drama) and MC is going to stop it...