Mayumi suddenly commits suicide, leaving behind an email that simply states “...killed by boyfriend”. Her grief-stricken classmates, Satomi (Umika Kawashima) and Yuka (Aki Asakura) discover that Mayumi’s death may be linked to a cell phone dating simulation game called “Keitai Kareshi” (literally “cell phone boyfriend”), and decide to investigate further. Satomi searches through Mayumi’s cell phone and finds an app called “Keitai Kareshi: Riku”. Soon, strange things start happening around her. A girl named Eri (Nozomi Maeda) dies when she tries to take the game herself, and is left holding a cell phone displaying the message “Love Gauge: 0”. The mystery deepens when Satomi takes the cell phone of her old friend Kumi and sees the face of her high school crush, Naoto (Hideo Ishiguro) on the screen.

nipponcinema.com