Age: 17
Birthday: May 15
Height: 175 cm (5'9")
Weight: 60 kg (132 lbs.)
Blood type: O
Motto: Believe and pursue the truth.

Kazehaya is Sawako's outgoing and friendly classmate, and is Sawako's sweet and friendly friend. He is so popular that during middle school, so many girls liked him that they formed a "Kazehaya is Everyone's" Alliance in order to maintain some level of peace among his admirers and more than half of these girls now attend the same high school. Kazehaya has held a long standing interest in Sawako and admits (though not to Sawako) that he likes her (he gets jealous easily), unaware that she feels the same for him.

During their second year of high school, he begins to wonder if she actually likes him after she does not give him chocolates on Valentine's Day, not knowing that she had been too nervous to give him any. He seemingly becomes depressed and shows an expressionless face often. However, after being confronted by Ryuu (influenced by Chizuru) and Pin, Kazehaya goes to Sawako as his friends jokingly remark that he likes Sawako; however, Kazehaya takes the remark seriously and agrees, subsequently confessing directly to Sawako. However, after Sawako's misunderstanding of his confession, he believes she rejected him. However, as of chapter 41 was finally able to confess his feelings to Sawako and are officially dating.