I don't know if I got the scenes 'of Romanos going with Rina and Yukako respectively for their corruption events ' sounds like the events from before they become succubi, but I'll check the men and succubus events, they're in the prison entrance right?
The Yukako and Rina respective scenes should have happened as you corrupted them, as it was something that Misaki suggested when it was her turn in regards to the discussion of how to progress the corruption of the two; For the priestess (I can't remember of the top of my head which one this was, same for the "warrior"), it was taking Romanos out to a village under the condition that he does not bad mouth the MC lest he gets five respective executed, needless to say he doesn't know when to stop running his mouth to make himself look good and winds up getting them all set for an off screen execution, with the priestess admonishing him for being so selfish as to not even consider the lives that he was throwing away even under the assumption that it was a bluff. For the warrior, it was taking Romanos to meet the resistance, where he bolsters about his self viewed, and previously unquestioned, greatness to encourage the resistance to try an all or nothing attack against the MC's forces, thinking that all he needs is to retry fighting him to beat him, even though it was Misaki that had single handedly beat all three of them in an instant when she was fully corrupted, where the warrior admonishes him for trying to send them into a suicide mission that is going to fail miserably. In both instances Romanos is left dead silent from the dressing down as he willingly goes back with the respective girl to their cells.
The man is an imp/devil sprite, and the succubus is just a standard succubus sprite. Both ask you if you want to let them go through with their request, and should be at the security gate to the prison cells. They may not be their at the same time, and they may disappear if you had chosen not to let them have their way with Romanos (don't know, never told them no, because they said how they would not kill him).