Alice Ryouhei, now a grown adult and married to Yuzuha, who is expected to give birth to their first child any day now, suddenly finds himself back in the Borderlands, the land between Life and Death, after getting into an accident. Will he be able to make it out of the Borderlands once more...?

After three years of working for a black company, Akira was exhausted both mentally and physically.
But one morning, what he saw on his usual way to work was nothing but a town full of zombies.
How will the former company slave, Akira, live his life in a world that has completely changed overnight!?

The manga follows "another Alice," a female high school student who curses her everyday life. When by chance she loses her way on the "Borderroad," she is forced to participate in deadly survival games with other female high school students. [ANN]

From Endless Youth and Co.:

Shunpei Closer's grandfather, Alsyd Closer, was an odd man. He traveled around the world always coming back to Japan to tell his grandson all the amazing adventures he would have. Before leaving to Africa on Shunpei's 7th birthday, he gives him a teddy bear named Hyde. Six years have passed and one day Shunpei receives a mysterious package that contains a deadly surprise. To survive, he will learn more about his grandfather than he ever dared to dream and learn what it takes to be a real man, and not the coward he always thought it was all right to be.

Alice Ryouhei will leave high school soon, but he's trying to avoid thinking about his future. Late one night, when he's hanging out with his tough friend Karube and his silly, girl-crazy friend Chota, they see fireworks. After one blindingly bright explosion, they find themselves waking up in a different world. In this 'Borderland,' people are forced to either participate in potentially deadly games or simply die. Will Chota, Karube, and Ryouhei be able to survive this dangerous new world, and is there a way they can get back to their original lives?