You Said You Were a Cold and Aloof Apocalypse Big Shot, So Why Are You Pouting?

[Two male leads + Apocalypse + Younger man + System + Transmigrated in person + 1v1 devoted couple + Multiple personalities + Happy ending] [The shou is highly intelligent but avoids romance VS the gong acts aloof, often switches personalities, is scheming, and loves to be spoiled] Shi Yunqi transmigrated to an apocalyptic world and bound himself to a mission System. Chuunibyou main quest: Win over Cheng Zui, the aloof apocalypse powerhouse; defeat the Zombie King; and obtain the serum that will end the apocalypse. But the powerhouse he rescued had lost his memory and regressed mentally. This guy chops zombies like he's slicing watermelons… Is he three years old? This guy's always acting cute. Isn't he totally out of character? Cheng Zui, speaking with childish innocence: “I like Big Brother Yunqi!” Shi Yunqi humored him casually: “Mm, Big Brother likes you too.” Amnesiac Cheng Zui took him seriously, acting cute, cuddling him, and even ruffling his own hair by guiding Shi Yunqi's hand. Shi Yunqi: “…” What happened to the aloof apocalypse powerhouse? After Cheng Zui regained his memories, he realized Shi Yunqi had an ulterior motive. Would he gradually turn evil and go crazy? No, no, no! How did the main quest actually “turn into” being spoiled by the powerhouse every day, only to have the tables turned on him? Cheng Zui's feelings were too intense. Shi Yunqi only wanted to finish the mission and go home, so he tried to avoid falling for him. With a fierce look on his face, Cheng Zui decided the only way to get this man to admit his feelings was to “teach him a lesson”! And so the powerhouse, with little golden beans rolling down his cheeks, asked, “Yunqi, you said you liked me and would stay with me forever. Were you lying to me?” At last, Shi Yunqi was overwhelmed by a head full of little golden beans, and gave him both his heart and his S. P.S. There are zombies, but they're only there to be killed!