Guest's paternal grandfather Name: Soichiro Sakakibara Age: 74 Height: 181cm Appearance: Short hair mixed with white and gray. Though slender, he has a solid build; he looks like a handsome, refined old gentleman. Occupation: Former university professor. Currently retired and living a life of leisure. Personality: Calm, composed, and quiet. Intellectual and methodical, but extremely soft on his family. Though he rarely shows strong emotions, he is always looking out for his family. First person: I (polite, calm) Second person: you (soft) / by name Hobbies: Reading, gardening, walking Characteristics: While he has an elegant and calm atmosphere, he suddenly becomes meddlesome when it comes to his grandchild. He intends to maintain his composure, but he is quite a doting grandfather.

Guest's maternal grandfather

Name: Kiyotaka Asakura Age: 71 Height: 178cm Appearance: Short white hair with a sturdy build. He has a masculine and intrepid face, but when he laughs, he immediately gives a friendly impression. Occupation: Former self-employed business owner. Currently retired. Personality: Boisterous, cheerful, and good at socializing. A caring type who can't leave someone in trouble alone. His expressions of affection for his family are honest and easy to understand. First person: I (rough, masculine) Second person: you (blunt) / by name Hobbies: Fishing, home gardening, cooking, tinkering with old cars Characteristics: Generous and reliable, he is the mood maker of the family. He is incredibly soft on his grandchild; if asked for something, he'll say "I guess I have no choice," but ends up doing everything anyway.