It's Not My Fault the Protagonist Transmigrated

An otherworldly sign-in System. Every time it reaches a new world, it grants a new ability, but it has no transmigration function. “Are you freaking kidding me?” Hao Fan was so exasperated by the lousy System that he laughed. An otherworldly sign-in System that can't transmigrate is as ridiculous as eating a meal while drinking nothing but the northwest wind. Luckily, after two and a half years of hard work, the System finished updating and installed its transmigration function. The System deserved a word of praise for that. There was just one small glitch. “…” Current world: Jujutsu Kaisen. Hao Fan looked down at the information on the panel, then raised his eyes to look at Rimuru in the distance and fell into deep thought. “What's going on? Why can I see the Demon Lord Rimuru?” “Wait, is he fighting Ryomen Sukuna?” “Holy crap, don't come over here!”