4.235 out of 5 from 113 votes
In the future, all facets of society are tied into OZ, a virtual world inhabited by millions of users. Kenji, one of OZ’s moderators, was set to begin another typical summer when the lovely Natsuki asked him to accompany her to her hometown as a job. However, little did Kenji know that the 'job' entailed pretending to be Natsuki’s fiancé in front of her eccentric family! Now on display and feeling like a fish out of water, Kenji tries his best to fit in with Natsuki and her relatives, until one day he receives a mysterious math problem through a text message. As an avid math fanatic Kenji can’t help but try to solve it, unaware that his actions may jeopardize not only OZ, but also the entire world...
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