The girls are beatiful but scummy personality, aside the little sis that of course is out of reach for now.
The plot start was seriously squeezed dry, I'm guessing because chinese readers are used to this kind of plot and are tired of the prologue, so it jumped to the marriage.
Full of plot holes, their encounter was presented after the marriage scene and seems like MC simply agreed to the marriage when knowing absolutely nothng about the blond that was going to become his waifu.
Okay, every male here would agree to marry her, but c'mon, at least 10 of us would asky why.
MC understand nothing of the situation and just gets abused, not knowing how to barter with them, anyway is possible that the tribulation they are avoiding is the usual one that would destroy a area arond the interested person and waifu wants to avoid that, could even be the common thunder tribulation that nukes that being that wants to ascend until they pass to the next level, totally destroying the area they stand, possibly bitch fears to fail, MC seal should be able to remove that problem.
Translation is weird, machine made maybe? I can see the team did try to make it make sense.