運命のミスマッチ~俺の彼女は、俺の嫁~

Luca, "allergic" to women, drunkenly marries Isla—neither remembers each other's face. He flees abroad; she struggles with her mom's bills. A year later, he meets her as a cleaner, hires her as a contract girlfriend, they fall for each other... and later realize they're actually married.