I have to agree on Marin ship (though I don't personally ship it as much as Yulan), and I agree that Marin is... healthier than novel Yulan since she'll respect Vio's choices (Marin has somehow managed to hold the desire to murder Vio's family for this long after all). I mean, my only issue with novel Yulan isn't even his yandere tendencies (and no matter what anyone else says about him not being healthy with Vio, I'm just gonna ignore it since the two things Vio desperately wants in both lifetimes are people who love her for who she is and a loving family *sure, she can just adopt on Marin end* but it'll be so special with Yulan end.
Although, Vio's failure of a father certainly needs to be the only one that actually deserves to suffer (I mean, the nerve of him to treat Vio like that when she's technically the head of the household), WHY did he even come back? Shouldn't being in the same house of his insane ex wife give him nightmares?