那是在极限的世界战斗的人们之间牵绊的物语——存在于这一时空的，无数平行世界之一——在那里，人类驱使着被称作战术步行战斗机（战术机）的人型兵器，与敌对的地球外起源种「BETA」持续了长达数十年的战斗。被灭亡的危机逼入绝境的人类，在残酷的命运当中将会展现怎样的生存方式——

故事时间为西元2001年，人类遭到了地球外起源种（联合国称其为BETA）的侵略，人口数量不断减少，正面临灭亡的危机。为了打破这令人绝望的局面，致力于对BETA进行战斗的人型兵器「战术机」的新型开发是人类眼下的当务之急。日本帝国斯卫军中尉、卫士的黑发美少女篁唯依接到了岩谷中佐下达的特别任务，以日方技术主任身分参加「Prominence计划」，目的地是育空基地的阿拉斯加。而另一边，美利坚合众国陆军少尉、卫士的勇哉布里吉斯被指派到极北大地阿拉斯加参与开发。之后会发生什么样的事呢，他们的命运又会如何？

A story centered around Lee, a young woman whose considerable charm masks an almost innate desire to destroy - especially when it comes to the man who loves her most, a struggling artist named Angelo. Unable to earn a living Lee Ann has found a way out, selling her babies whenever she finds herself pregnant. Caring deeply for children, Angelo is troubled by this, but is torn by his love for Lee Ann. It takes on a whole new dimension when he learns the strange and funny middle class childless couple that has agreed to buy Lee Ann's baby has a past more shocking than he'd ever imagined.

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Can a boy in love win over his beloved's heart and change her views on love and commitment?

Yuvaan is a friendly 19 year old college boy. The story begins with Yuvaan falling from a balcony with a diary, and being taken to the hospital. An inspector comes for investigation and finds out that he is the same guy who was there in the mms scandal. He starts thinking that if Yuvaan wanted to commit suicide then why with the diary . Then he starts reading the diary.