Long before Kenshiro said, "You're already dead," a different Kenshiro walked the violent streets of Shanghai. The city is in constant crisis as two mafia families battle one another for supremacy. In the crossfire, a little girl named Erika is orphaned and soon taken under the wing of martial artist Liu Fei-Yan. Sorrow seems to follow the girl, as every time Fei-Yan attempts to hand her off, her new guardians end up dead. Fei-Yan decides to bring the girl to a man named Guise but instead crosses paths with powerful Kenshiro Kasumi.

City Hunter, Saeba Ryo, after months of idleness, finally scores a client and it is none other than the beautiful Mega City TV newscaster, Sayaka, who fears for her life. What's more, the enemy are her employers who are ready to resort to any means necessary to kill her. Ryo takes on the might of a TV station in a bid to save Sayaka, but finds that all is not what it seems...

Two mad scientists, Professor Hiiragi and Count Collection, simultaneously manage to open a dream hole to an alternate world where myths are real, the Sixgate world. Professor Hiiragi recruits his daughter Rokuna and her friend Mondo to be the Mon Colle Knights and help him in obtaining six magical items before Count Collection does. These items which can alter the barriers of dimensions when combined, allowing them to be used to either peacefully have the magic of the Sixgate world cross over in the human world, take over the minds of all monsters, or worse, reformat reality. While this entry only has details based on the Japanese version, it also includes the version aired on Jetix.

After being best man at his best friend's (Saitou Toshihisa) wedding, Nagai Atsushi realizes that he might have fallen for him. Nagai, drowning in his sorrows and hatred for the new bride then meets Honda Kenzou, another guest at the wedding. Honda takes care of Nagai when he was dead drunk and now Nagai can't stop thinking of both Honda and Saitou.