Asaka Nobuyuki

The heroine's husband, a salaryman who commutes to work every morning for an hour and a half. He was a sportsman who played tennis in his student days, but now that he's 30, signs of wear are starting to show.

With his beloved wife, their only son, and a condominium (albeit secondhand), he could say he's at the peak of happiness. He's the type to charge headlong into relationships.

He fell for the heroine the moment he saw her when she joined the company as a new employee five years ago and confessed immediately. After a year of dating, they married.

He doesn't sweat the small stuff or, to put it less kindly, he's a bit of a scatterbrain. He thinks of the protagonist living next door as a bit of an eccentric, but overall a quiet, decent neighbor.