My Little Sister Can Read Kanji Volume 3

The 23rd century is back to normal: The prime minister is a 2D character again and kanji has been banished to the history books... Except for the appearance of the Special Cultural District that keeps up the old writing style and traditions, that is. But that shouldn't affect Gin Imose's life, after all. Until one day, he receives an email from someone who shouldn't even exist... his long-lost blood-related little sister!