カンタレラ (Cantarella)

Background
This song was part of the EXIT TUNES compilation album Vocalostar.

The song talks about an obsessive and intoxicating romance. A song about a man (KAITO) who tries to keep his love for a girl (Miku) hidden and approach the girl in order to make her his. Taking time by the forelock, he gets closer to her, and he finally reveals himself.

Kaito and Miku personify Cesare and Lucrezia Borgia, known for their suggested incestous relationship.

Theater Production: Cantarella
A musical based on this song ran in Shibuya's Space Zero theater in Tokyo from August 3 to August 7, 2011. It was directed by Yukio Ueshima, with Kentarō Kanesaki, Otōto no Ane and Tomohisa Sakou starring in the main roles. The play was also streamed live on Nico Nico Douga.

Written and Pictured Serialization
B's-LOG Comics published a novel called Cantarella -Forbbiden Love is Poison- in September 15th, 2011 and a manga adaptation called Cantarella -Immoral Love and End of Poison- in March 1st, 2012. The novel was written by Kaoru Ooshi and illustrated by Madarame, the manga was illustrated by Akira Sakamoto.

Ichika made a manga adaptation as well called Cantarella -Poison of Blue- which was published in the digital magazine Nico Nico Age Premium in April 9th, 2011 (it's also avaliable at Yahoo Bookstore). The physical print was released in October 9th, 2012.

The first works mentioned are inspired off of the theater play and the later one uses both Kaito and Miku.

Trivia

 * Cantarella is a poison or narcotic that's said was used by the Borgia family as their favorite poison in political assassinations. There are a lot of rumors about its nature, preparation and effects:
 * Some sources say that it's a poison obtained with a mixture of arsenic and pig's entrails. The mixture should rest during 30 days for total putrefaction, and after being purified the final result was a white salt similar to sugar. Even in low doses, it was deadly.
 * Other authors claim that was a mixture of salts of copper, arsenic and phosphorus obtained from the evaporation and treatment of urine.
 * The real effects aren't known. Some sources claims that was deadly poison that caused an agonizing death in 24 hours. Other people claims that was a narcotic that caused 4 hours of apparent death.