Adventure of a Lifetime

After four years away, Hiroki Mizuno returns to the Ogasawara Islands during summer vacation to help his grandmother with her shop. He meets Emily, a runaway searching for sunken treasure, and reconnects with Chisa, his childhood friend.

The story follows Hiroki, Emily, and Chisa through conversations and summer activities on the island, including scuba diving and a search for the rumored Ghost Ship. The island setting also features local culture, sights, and marine life.

As a visual novel, the game centers on reading story scenes and making choices that lead into two character-specific routes. These branches develop Hiroki’s relationships with Emily or Chisa; the supporting cast is voiced, while the protagonist is not.

Players who enjoy the game often praise its sunny Ogasawara setting, relaxed summer mood, and details about island life and diving. Reviews also appreciate the music, artwork, voice acting, and the romance and character relationships across its two routes. Some find the story charming and absorbing, while others consider it too short or feel its character arcs and plot move too quickly.