In the 5th episode of the 2nd season of The Quintessential Quintuplets, the quintuplets' father says he hates Futarou.
Why does he hate Fuutarou? He seems to have met Fuutarou before and know about Fuutarou's dad, so I wonder whether the reason has something to do with Fuutarou's family. Does he have a bad relationship with Fuutarou's dad?