Manga by author Imai Yuu

Kitou Yukinari is an ordinary high school boy. However, while playing a game of pocket pool one day, he suddenly felt as if he was passing a kidney stone. But this kidney stone was shiny and pink?A trip to the hospital shows that Yukinari has a medical malady called Adamasu Syndrome - in short, whenever he jets his juice, a little diamond pops out of his saltshaker. Of course, it's painful as hell, to the point where even the act of popping the champagne bottle will shave off his lifespan. And of course, once his secret comes out, dozens of women flock to seduce him, their best friend now stuck inside his best friend. Can Yukinari survive when the world wants to sell his seed?

Miyahara Chiko is a mysterious girl who never seems to talk to anyone and always wears a pair of headphones and a scarf. But what is she hiding behind that silent facade?

From Fairgame: In both middle school and high school, Kawashima hadn't had any luck with girls, but this is a day that a miracle encounter came to him! Apartment where he moved, there were a high school girl living in his neighbor and in addition to that, she is living alone! In a situation that any man will admire, Kawashima's tension is hyped up. However, there was also a odd part to it, like she likes to drink beer. What is her identity? It's a little bit ecchi JK comedy!

The world is on the brink of collapse due to the zombie threat. Meanwhile, I'm living the most thrilling and tantalizing days of my life! A high school boy who loves shogi and gaming discovers a mysterious power he possesses for the first time in this zombie-infested world.