悪食娘コンチータ (Akujiki Musume Conchita)

Background
This song was uploaded on March 3, 2009, and is the only Meiko original song to achieve 1,000,000 views.

The song concerns Banica Conchita (Meiko), a woman who, at one time, ate only the most delicious and exquisite food. Now, however, her tastes have evolved so that she wants something new and grotesque every day, and nothing enters or leaves her palace. The fifteenth personal chef of the year (Kaito) asks for a brief vacation, but she, angry, decides to eat him. Running out of food to eat, she ends up eating her butler (Len) and maid (Rin), and when everything has gone, she ends up eating herself - which nobody else will ever know what it tastes like. Akuno-P gave keywords to this song,「敬い称えよ　われらが偉大なコンチータ」(“Bow down and worship our great Conchita”) and its initial phrase is 「さあ、残さず食べなさい｣ ("Now, eat them out"). The official English title of the song is "Beelzebub Party".

This song is one of the tracks of Akuno-P's Seven Deadly Sins Series.

This song is featured in the EXIT TUNES compilation album Vocaloanthems.