Koi no Gekidasa Ecstasy!...?

Soo I was on Yesasia looking at some upcoming releases (Shishido's upcoming single finally has a title btw, but I figured it didn't deserve it's own blog entry because the only thing in it would be something along the lines of 'roar the title's EMBLEM'), and I came across a couple more upcoming Prince of Tennis releases...
Now, besides the two singles coming out in a couple of weeks (September 26th, to be exact: Echizen Ryoma - Wonder Land and Shishido Ryou - EMBLEM), there were three more additions to the Prince of Tennis CD section on Yesasia:
(November 14th) Kawamoto Naru - Title To Be Determined
(November 14th) Musical Prince of Tennis Absolute King Rikkai feat. Rokkaku -Second Service
(October 31st) Tachikiritai - Koi no Gekidasa Ecstasy!
Ok, starting from the top- the first one is just a normal everyday single release from Kawamura Takashi (or maybe it's a birthday single? his birthday is November 18th, and I know a couple of other characters have had birthday singles).
Then there's the Rikkaimyu Second Service soundtrack, I've been expecting that for a bit, and it reminds me I need to watch the musicals in general...
But I have to say, the third one made me just wtf...

Koi no Gekidasa Ecstasy! is by a group called 'Tachikiritai' (which, btw, I translated online and ended up with 'Bled party', and I honestly don't know what to make of that...xDD)...which, according to Yesasia, consists of:
Fuji Shuusuke (Seigaku)
Shiraishi Kuranosuke (Shitenhouji)
Chitose Senri (Shitenhouji)
Shishido Ryou (Hyoutei)
...
ok seriously, wtf
I can understand Fuji and the two guys from Shitenhouji, considering the anime is in the Shitenhouji arc right now.
But where the fuck does Shishido come into this? Is there something I'm missing? Maybe a scene I forgot or something?
Or maybe I'm misreading the kanji? But I checked it against the Japanese wikipedia...
AND AND AND
It's the next OVA opening!
D:
I wanna stick with Kakaeta Kiseki...but I guess it can't be helped...
still though, I don't want an opening with Shishido in it. D: It's just so fucking random. Dx
I guess we'll hear this song for the first time on September 25th when the next OVA DVD comes...


So, Koi no Gekidasa Ecstasy!...from what I could tell from the image on Yesasia, 'ecstasy' is actually written in kanji but it's supposed to be pronounced 'ecstasy'...I can't read the kanji though...
'Gekidasa' is part of the phrase Shishido uses often, 'Gekidasa daze', which means something along the lines of 'That's lame'...
So...
Love's Lame Ecstasy?
...
O_____o
wtffffffffffffff I'm confused


I think I need to find more information...preferably in English...


Ohhh, here are the links:
Yesasia
CD Japan