Article snapshot taken from Wikipedia with creative commons attribution-sharealike license.
Give it a read and then ask your questions in the chat.
We can research this topic together.
2009 single by Aya Kamiki and TAKUYA
"W-B-X (W-Boiled Extreme)"
The cover of the CD+DVD combo pack featuring Aya Kamiki and TAKUYA
"W-B-X (W-Boiled Extreme)" (stylized as "W-B-X ~W-Boiled Extreme~") is the eleventh single by Japanese singer-songwriter Aya Kamiki and the first as a collaboration with TAKUYA, former guitarist of the Judy and Mary, as Aya Kamiki w TAKUYA (上木彩矢 w TAKUYA, Kamiki Aya w TAKUYA). The song is Kamiki's first release under the Avex Trax label and is used as the opening theme for Kamen Rider W. It is also a single from her first album released under Avex titled Individual Emotion.
Summary
In its first day of release, the single sold 7000 copies and reached #8 on the Oricon daily charts. It also became the #1 theme song downloaded as a ringtone for the week of November 25 to December 1. The single has sold 54,176 copies during 27 weeks and has been downloaded more than 100,000 times (Gold) on mobile.