Trinoline Genesis is a visual novel with two-dimensional graphics, stylized as anime art. The local setting combines everyday life with elements of science fiction. The plot outline is as follows. One summer, a girl named Shirone Nanami drowns in the sea. Shocked by the death of his sister, Shun makes a promise to himself to live his life in place of his deceased relative. Since then, the hero began to painfully perceive the onset of each new summer season. One day in the summer, he met an android girl who looked exactly like his sister and played her favorite melody on the piano. This is how the high school student met a creature named Trino.

This is an addition to the game Trinoline. The new version differs from the original in the presence of additional routes for Hanako and Ayaka. The developers also added to the plot. The creators added side stories and epilogues for Shirone, Yuuri and Sara. The narrative is divided into 5 chapters. Each act is dedicated to one of these girls. Heroines from other projects of this developer also appear here as minor characters. In addition, the addon includes additional costumes for the main characters. This project is designed for those who completed the original video game. It contains hentai scenes, but to unlock them you need to install a special patch from the developers. By default, the title starts in the censored version.