Grand Blue Dreaming manga volume 20 features story by Kenji Inoue with art by Kimitake Yoshioka.

Despite her best efforts, Aina has suffered one defeat after another in the war for Iori’s affections. With spirits running high as Iori and the gang prepare to visit the famous “shark scramble” for their long-awaited dive, this might be Aina’s best chance to turn the tide. Can she find the winning weapon in her arsenal of charms?