Anime Crossover: Otherworld Simulator

After transmigrating nearly ten years ago, Kamiwara Yu finally awakens the memories of his past life and discovers his golden finger: a rather rudimentary simulator System. Having been traumatized by the memories of his previous life, Kamiwara Yu knows that some nasty simulators overwrite the real world with the simulated one, causing all sorts of problems. So he decisively chooses a fictional otherworld that can never overwrite reality as the setting for his simulations. At first, he treats the System as nothing more than a toy to pass the time, never realizing how serious this is. “Xiao Tao, when I’m no longer here, you have to take good care of yourself, and of Uncle Zhongli, too. Don’t indulge him too much.” “Jannie, I love you, so I’ll love what you love. But I can never become someone like you. You matter more to me than the so-called fate of the Tara people.” “Nana, Nana, wait for me. You have to wait for me, all right? In two years, just two more years, I’ll come get you. So… so you have to hold on. You have to…” “…” When “passing the time” turns into knife after knife stabbing him in the heart, he suddenly realizes that having the worldlines overwrite reality might not be so bad. At least then there wouldn’t be so many goodbyes and so much pain. “If only you could come to my side… sigh.” Kamiwara Yu sighs, and then… they really do come! And his real life blows up. “Kamiwara! Who are they?!” People from every side point at one another and demand answers from the person surrounded in their midst. Kamiwara Yu: “…” Just let me explain! [The gentle big sister Masha, who likes to whisper in Russian!!]