AQUA is a free-to-play romance adventure game that can be played on Android devices. The game is set in a world where the computer AQUA, capable of generating holograms with mass, has become widespread. It features a school romance story with beautiful heroines and a grand SF story consisting of three parts. The game is easy to play and can be enjoyed by first-timers. You can play the middle part of the story for free, but to unlock the entire scenario, you need to purchase the scenario unlock key for 1,620 yen (including tax).

In the game, you play as Narumi Sota, who returns to the science and technology city of Tsukigahama with his mother after seven years. Sota is reluctant to come back to the city because it reminds him of Chisa, who he thinks is dead. However, at school, he meets a beautiful girl who looks like Chisa, and his life changes forever. The game features full voice acting, original illustrations by Akizuki Tsukasa and SD illustrations by Harapeko Musume, and a scenario by Poti-kun, Wheels Taiki, and Koji (SideStory). The game uses about 1.4 GB of storage.