Tsugi no Giseisha o Oshirase Shimasu - Houkaisuru Sekai ni Shinigami to Japan - PSP - Visual Novel

Sakahashi Keisuke wakes up from his sleep to the voice of Mikami Kasumi, who attends the same school. When he is woken up by Kasumi and looks around, he sees an unfamiliar ruin-like landscape. Perhaps because he is still not thinking clearly, he gets a headache as he thinks. As he investigates the surrounding area to confirm the situation he is in, he discovers that 14 people, including himself, have been brought here in the same situation. This is the 49th floor of the WR Building somewhere, and all of the participants have unfamiliar bracelets on their arms. And the biggest shock of all is that they are forced to take part in a murder game called "Serial Killer Game"... What will become of the remaining 12 people, including the righteous Sakahashi Keisuke and the kind-hearted girl Mikami Kasumi who is emotionally scarred?