Sign-In Starts from King of Fighters

In the real world, Gou Qi, a fresh university graduate, unexpectedly obtains a sign-in system, allowing him to travel through different parallel worlds and acquire the skills of characters in those worlds to strengthen himself.In the King of Fighters world, he becomes a teammate of Ryo Sakazaki.In the Honor of Kings world, he becomes a disciple of Li Bai.In the League of Legends world, he becomes a true hero....