Maruo Nakano Husbando

Maruo Nakano is the stepfather of the Nakano Quintuplets after Rena Nakano (the Quintuplets' mother) remarried several years before the series begins. He runs a large hospital and he is also a doctor. Nino Nakano remarks that Maruo always does the thing he deems as correct. He believes in results, which is shown in his decision to hire Fuutarou Uesugi (the #1 student in the class) and his condition that Fuutarou be fired if his daughters' scores are not satisfactory. This also comes into play into rehiring Fuutarou when he scores third in the country for the national mock exam, and is implied to have been able to score higher had he been in a proper condition to do so. While Maruo is not the quintuplets' biological father, he genuinely cares for his stepdaughters, which is shown in his decision to hire Fuutarou Uesugi, the best student in class, as his stepdaughters' tutor, despite disliking him. He also doesn't force his opinions and decisions on the quintuplets. When the quintuplets decide to move out from their residence to live independently, Maruo becomes displeased. Even so, he still considers their thoughts and allows them to do so. Maruo was once a student of Rena, and according to Isanari Uesugi, he was the president of her fan club in junior high school, implying that he harbored feelings for her. Many years later, when Rena fell ill and had to be hospitalized, Maruo became her doctor and he would often visit her, as noted by the Nakano quintuplets. They married sometime before her death, and he would continue looking after her daughters in her memory.