 If you liked
E.A.r.T.h
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 ...then you might like
No Game No Life
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It seems as if Hiroki and Shiro (EArTh) were the prototypes to Sora and Shiro (NGNL) as they have some similarities.
One of them are their appearances: Both Hiroki and Sora have that tall, slim figure with messy hair and Shiro and Shiro are both cute white-haired lolis.
They are also made by the same creator Yuu KAMIYA so the writing and art have their similarities.