Luna Slater x Venus Angelic
Luna's wannabe kinderwhore and Venus' kawaii weeb aesthetics and shticks would go well together, they both got a substance abuse problem (Luna's a drug addict, Venus is an alcoholic), they're both getting grimier by the day, and they're probably both gonna end up homeless and either dying on the streets one day or getting done in by their unhealthy habits before than can happen. A good match.
(Though maybe it would unironically do Venus some good to be shipped to america, she'd be out of japland where she just continues to be in a downward spiral while being molested by old asian men, and she wouldn't be in europe either where kappa momma Margo lurks.)