Manga / Eko To Issho

Plot Summary: Hiroshi finds a broken cellphone by the side of the road one day and takes it to a store to get it fixed. To his surprise, the cellphone is delivered to his house in a large box. Upon opening the the box Hiroshi discovers that he has actually received a humanoid cellphone-girl. This is the story of Hiroshi's life with the cellphone-girl Eko.


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http://tvtropes.org/pmwiki/pmwiki.php/Manga/EkoToIssho