Infinity Starting with Hikaru no Go

Chen Anxia gained the ability to travel between worlds, but he needs to complete the world missions issued by the system to unlock the next travel.
Gradually, Chen Anxia discovered that the world she had transmigrated to seemed a little different.
Because the world he had traveled to now contained a group of people called players.
Most importantly, these players mistook Chen Anxia for the protagonist.
Thus, Chen Anxia was forced to embark on the path of becoming the protagonist (and a show-off).
Hikaru no Go World
Akira Toya: "The number one Go player, Kouhiro Toya, is my father!"
Hikaru Shindo: "Fujiwara no Sai, who once transformed into Honinbo Shusaku, was my teacher!"
Chen Anxia: "I don't have any of those things, but I have players from another world!"
......
Detective Conan World
Shinichi Kudo looked at the newspaper in his hand, his face full of resentment.
The newspaper headline read, "Chen Anxia: 'The Sherlock Holmes of the Heisei Era,' 'The Savior of the Japanese Police.'"
......
Demon Slayer World
Muzan Kibutsuji cast a chilling glance at Chen Anxia. "Young man, you lack martial ethics..."
Chen Anxia: "???"
The surrounding crowd of players was filled with confusion.
......
Naruto World
Deidara: "Art is an explosion!"
Chen Anxia: "No, only group brawls are true art."
One Piece World
Redhead: "Please give me some face!"
Chen Anxia: "Hmm? Who should I give face to!"
Behind Chen Anxia, ​​a large group of players stared intently at the red-haired man.
PS: This book is also known as "I'm Really Not the Protagonist".