First they go into bathroom to talk about stuff but later on they talk openly in the bedroom, where is logic in that lol.
Another piece of bad logic is trying to lie about an English university. This is insane on several layers:
① A few words in English from an experienced businessman (and a potential future relative) would be enough to discover an apparent fraudster fiancé (who supposedly intends lying all the way into his new family).
② Don't these very important people know how to do some basic background checks before inviting a previously unknown man to their dinner table? At this point asking him about his education amounts to letting him dig his own grave while they decide how severely they have to punish a literal nobody that dared to approach their precious heiress in that way and to ruin their collective future.
③ A control freak that puts a surveillance camera in a loving couple's bedroom is almost guaranteed to become at least murderous when she knows she's been lied to her face. Without reading further ahead (and thus without spoiling anything from the next chapters) I can guess that the author intends to dispel the tension by some passionate talk that maybe even would warrant a change of heart of the heroine's relatives. But a realistic story would have an instant bad end with the main character facing a sudden death offscreen at best (and, if he's not that lucky, many years of very creative pain in an underground torture chamber while the old lady would
watch).
