Idol group BiS member Wakisaka Yurika will withdraw from the group after their solo live concert at Ryogoku Kokugikan on March 16th.

According to the announcement made on their official site, Wakisaka's chronic disease, which she has been suffering from before she joined the group, worsened, and after consultation with�her agency, and�considering�her condition, Wakisaka's�withdrawal has been decided.

In addition, Wakisaka's ankle, which she injured during high school, started to recur after she challenged herself to a 24-hour endurance 100 km marathon back in�October. Therefore, she took a break, and just made a comeback on January 8th.

Wakisaka is currently in the second year of �junior college; however, she revealed on her blog, "I was supposed be graduating next month, but I could not..." Therefore, she "will attend the classes properly starting in April, and will make this year one for me to re-think about my future. I'm interested in nutrition, and welfare. Or I may be saying that I want to be a singer after all, again..." She also wrote, "Until the live at Ryogoku Kokugikan, I will do my best in tour and events, with my gratitude."

On the same day, they also revealed the details on their upcoming single "BiSimulation" that is set for release on March 13th.

Check out the details on "BiSimulation" below.

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<LIVE Edition *Limited : Wacky Honky Bye Bye version> ?28 pages booklet, mini-photos (6 kinds randomly chosen) included

[CD]
01. BiSimulation
02. Hide out cut
03. BiSimulation -Acappella-
04. Hide out cut -Acappella-
05. BiSimulation -Instrumental-
06. Hide out cut -Instrumental-
[DVD]
?2012.7.13 LIVE "BiS Major Debut Kinen Chokuzen Dai Party Mada Major ja Naimon!!" @Shinjuku LOFT

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<LIVE Edition>

[CD]
01. BiSimulation
02. Hide out cut
03. BiSimulation -Acappella-
04. Hide out cut -Acappella-
05. BiSimulation -Instrumental-
06. Hide out cut -Instrumental-
[DVD]
?2012.7.13 LIVE "BiS Major Debut Kinen Chokuzen Dai Party Mada Major ja Naimon!!" @Shinjuku LOFT

-

<MUSIC VIDEO Edition *Limited> ?mini-photos (6 kinds randomly chosen) included

[CD]
01. BiSimulation
02. Hide out cut
03. BiSimulation -Acappella-
04. Hide out cut -Acappella-
05. BiSimulation -Instrumental-
06. Hide out cut -Instrumental-
[DVD]
?MUSIC VIDEO �BiSimulation -color ver.-�
?MUSIC VIDEO �BiSimulation -monochrome ver.-�
?�BiSimulation� Making Video

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<MUSIC VIDEO Edition>

[CD]
01. BiSimulation
02. Hide out cut
03. BiSimulation -Acappella-
04. Hide out cut -Acappella-
05. BiSimulation -Instrumental-
06. Hide out cut -Instrumental-
[DVD]
?MUSIC VIDEO �BiSimulation -color ver.-�
?MUSIC VIDEO �BiSimulation -monochrome ver.-�
?�BiSimulation� Making Video

-

<CD Edition *Limited> ?mini-photos (6 kinds randomly chosen) included

[CD]
01. BiSimulation
02. Hide out cut
03. BiSimulation -Acappella-
04. Hide out cut -Acappella-
05. BiSimulation -Instrumental-
06. Hide out cut -Instrumental-

-

<CD Edition>

[CD]
01. BiSimulation
02. Hide out cut
03. BiSimulation -Acappella-
04. Hide out cut -Acappella-
05. BiSimulation -Instrumental-
06. Hide out cut -Instrumental-



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Source & Image: Oricon + BiS official site