Aki Hayami

Aki is Kouta's childhood friend and has always been his neighbor. Her parents and Kouta's parents have been friends since long before they were born, so their two families have always been very close. Aki is a very sweet and cute girl, her popularity with boys is incredible, just like with girls. She doesn't seem very receptive to Kouta but in reality, she has realized longer than him that they were of the opposite sex.