Someone's father: Son, this is your long-lost half-demon little sister.
Male lead: Okay, got it.
Someone's father: Son, this is your swordmaster big sister, whom you've never met.
Male lead: Mm. Put her over there.
Someone's father: Son, this is your half-sister, a demigod.
Male lead: I... got it.
Someone's father: Son, this is your vampire big sister, who's come all this way.
Male lead: ...
Someone's father: Son, this is...
Male lead: Enough! You old bastard, just how many big and little sisters have you made for me?! (Flips the table)
Some childhood friend (holding a cleaver): Darling, don't make me send you off to a nice ship in Germany's orthopedic ward!