"Sorry to trouble you. It's a love song."
Enko is short for "enjo kosai," which means "compensated dating", which isn't really (or always) prostitution

ENKOO~ (ENKOO~) ENKO SHOUJO!
I don't really like how Nashimoto uses Miku, but his/her songs are really captivating

■Title エンコー少女 (Enko shōjo)
■Original http://nico.ms/sm21296909
■Everything Nashimoto Ui (梨本うい)
■Mastering Kaichi san
■Vocals Hatsune Miku

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Check out our blogs!
Tosiaki: English translations
(he also has a gaming channel, check it out)
Tumblr:   / tosiaki7  

Kanden: Subtitles
(you can ask him for romaji ec.)
Tumblr:   / kanden-san  

Disclaimer ~ I don't own anything in this video aside from the translation, all rights go to the niconico uploader/s~