One day, the elderly-looking transfer student Tanaka Shori, AKA Billy, arrives at the school. He proclaims himself a scientific genius, but he's actually a commander in the enemy organization! He declares that he'll use his own formula to ascertain Twin Angel's secret identities, but...
Why do you call yourself Billy 
if your name is Tanaka?
لماذا تدعو نفسك بيلي إن كان اسمك هو تاناكا؟
¿Por qué te llamas Billy si eres Tanaka?
¿Por qué te llamas
Billy si eres Tanaka?
Pourquoi Billy et pas Tanaka ?
Cosa c'entra Billy con Tanaka?
Por que você se chama de Billy,
sendo que seu nome é Tanaka?
Почему у тебя фамилия Танака, а имя Билли?