Product description ※Please note that product information is not in full comprehensive meaning because of the machine translation.
Hisashi Hibino, a third year high school student, has a secret girlfriend.
She is a novelist and her older brother Toshikazu who has no blood connection.
When she is at home, she spends time as a girlfriend when she leaves home as an older brother and a younger brother.
However, there was something to worry about with Hisashi.
To Hisashi, Toshikazu is her first girlfriend, but Toshikazu is not.
Is it the only one she always wants to be with? Is it Hisashi who drowns in love?
It also includes the 『 Drowning Complex 』.