Gray to Blue no Ai Made

Koutarou, a high school teacher who is ordinary in both looks and attitude, is reputed to be a "boring man"; Koutarou's father-in law, Koushi, who somehow remains charming despite being over 50 years old; Koutarou's student, Sayotani, who, in all his youth and beauty, goes through one man after another. These three people who are ages apart connect with each other through Koutarou… A love story about three men who remain clumsy about love despite their age!