Takumi x Hiruko would only end up in an abusive marriage where Hiruko would put Takumi on a leash and collar, beat him while calling him a slut, and not even let him do his favorite activity, which is sleeping, becasue she will be the entire night every day of the week raping him.

Hiruko insulting Takumi when he makes a mistake
Hiruko hitting Takumi when she gets angry
Hiruko isolating Takumi from his friends
Hiruko raping Takumi when she is drunk
Hiruko being an abusive wife