Grand Blue Dreaming manga volume 17 features story by Kenji Inoue with art by Kimitake Yoshioka.

Believing that Iori has hit it rich after winning the lottery, Sakurako seizes her chance to pounce. Aina then launches her own desperate defense as friends from both sides join the fray. With Sakurako glued to Iori’s side, the Okinawa nights quickly reach a fever pitch. Who will emerge victorious in the war for the fickle Iori’s affection?