The protagonist takemoto Akira, is just an adult shut-in who likes playing games. When finished completing the gal game he bought recently, Akira was killed by a thief who got in his apartment 「Seriously, I just finished the game」. Though depressed for a brief moment, he soon realized he reincarnated into the world of a game he played before his death! Even so, the person he reincarnated was neither a protagonist nor an antagonist but a Mob called Nakahara Kazuki, can he survive in the world of apocalypse.
Winter is a normal college student. In his normal life, he somewhat manages to get through the struggles of the university life with success. But, he does not dream of anything, and let fate write his path unto which he thought "is destined for me to become". He had few relationships on the past, in which he had given everything of himself through each of them. But recently, he decided not to fall in love again, as pain slowly built up in him, making him question his existence towards all. It was all usual, until a foreign message was sent to him, "はじめまして、立ち止まるな！"