Simultaneous Time Travel: the Fun Is All on My Own

In the world of Conan, he became a thief who shocked the world, leaving the famous detective helpless. In Naruto, he single-handedly destroys the entire fucking world, creates true peace, and lets them understand what true love is. In the world of martial arts, it gives people in the martial arts a little magnetic shock, letting them know what martial arts is and what justice is. Or, set off a revival of spiritual energy in a world without demons and promote the evolution of the world... The so-called strong person is a person who can firmly and realize his own beliefs. The world wants to change me? Then let me change the world first! (The protagonist in each world is more or less affected by the personality of the people he travels through, so his performance is also different)