Grand Blue Dreaming manga volume 15 features story by Kenji Inoue with art by Kimitake Yoshioka.

Summer's coming to an end, which means it's time for Iori and his pals to head back to class. Everyone's bummed that they didn't make any precious summer memories. So, they decide to hold a little party to pick up chicks. Unfortunately, Iori knows every girl at the get-together, and he's the only one standing between them and some idiots looking to score!

Grand Blue Dreaming manga volume 16 features story by Kenji Inoue with art by Kimitake Yoshioka.

After scoring a winning lottery ticket, Iori convinces Chisa to join him on an island getaway to Okinawa. A jealous Aina resolves to throw a wrench in any potential romance by tagging along in secret… and even ropes Kohei into her scheme! It’s two days of botched love hotel bookings, a broken-hearted otaku, and even a little diving in this love duel for the ages!

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?

Grand Blue Dreaming manga volume 18 features story by Kenji Inoue with art by Kimitake Yoshioka.

Nanaka is left fuming after she learns that Chisa lied to her about traveling to Okinawa. Suspecting Iori of seducing her sister during the trip, the frighteningly overprotective Nanaka plots how to make Iori come clean. Meanwhile, Iori finds his resolve floundering in the face of Sakurako’s relentless love attack. Will he make it out of this in one piece?