In the era of interstellar warfare, every close-combat mecha is paired with a long-range sniper mecha for cover. Sniper mecha pilot Yan Xueshan (beta) and close-combat mecha pilot Arthur (alpha) are such a pair. They have been partners for six years, always together, eating and living together, their tacit understanding is like each other's souls.The upcoming decisive battle is a fight for survival.The day before.Yan Xueshan: "Remember to write your will in advance."Arthur said dejectedly: "I only have one regret, if I die this time, I'll die a virgin."Yan Xueshan snorted coldly: "... Pathetic."Arthur asked pitifully: "Master, could you fulfill this last wish of mine before I die?"Yan Xueshan: "?"It's absurd.But Yan Xueshan thought about it, this is his life-and-death comrade, chastity is nothing—fine, he agreed!!However, after the decisive battle, they both survived.Not only did they become war heroes, but Arthur also transformed into the Federation's "crown prince."Arthur pulled out a marriage application, just one signature away, and said honestly: "Master, didn't you say that after this battle, we would go back to get married and retire? You helped me fulfill my wish, I'll help you fulfill yours!"Yan Xueshan: ... Something doesn't seem right.