Starting from the Collapse of the World, I Became the Behind-the-scenes Boss

In 2012, the destined Yulandel had just completed her A-level Valkyrie assessment, Bronya had just joined the Cocolia Orphanage under Anti-Entropy, and Shihen finally stepped into his loyal World Snake. PS1: Under the moonlight, Alysia pulled the bowstring: "This time, you must look at me carefully~" In the morning light, Yulandel held the black abyss and white flowers: "I won't let you escape." In the kitchen, Raiden Mei held a spatula: "Human, you also want to be my enemy?" On the top of the moon, Kiana raised the Sword of the End: "You, are you going to betray this world?" Shihen: "..." I just want to be the final boss, what do you want to do? In this case, let's showdown! From now on, I, Shihen, will stand above the sky, and the end can't stop me, I said!