Ruthless assassin Genji has become bored with his current life and wishes to retire from a life of crime. The only problem is the League of Assasins that is reluctant to let someone so troublesome leave. After some negotiations, the League agrees to let Genji leave after one final mission. Yet after a twist of events, Genji is left for dead, betrayed at the last moment. Unwilling to let everything end like this, he enters into an agreement with a supernatural force. Now he has to enter different worlds to complete the assigned missions or face the consequences.
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This is a world-hopping genre with semi-infinite concepts.
Heavy inspiration from The Ultimate Evolution, The Devil's Cage, Reincarnation Paradise