internet cafe in a magical world:starting with ghost of tsushima

poison was a assain who was abandoned by his family but who knows that he would get attention from a supreme being.

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it is said that in the world of swords and magic, there exists a magical place where mages and even ordinary people can go to other worlds to fight, this actually increses magical power and comprehension. however, no one must offend the owner as although he is lazy, he will turn all offenders into special slaves