wasted potential

when i first saw my favourite actors in this drama, i was beyond excited to watch it, the idea of this drama is so creative, yet i was kind of disappointed in this show, the ending got me very confused, what happened to haru and dan oh? did they disappear? go into a different story? who's haru? who are his parents? where does he live? overall the writers had the right idea, but it wasnt excuted properly
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