Nakamura Yusuke came on as a guest for the individual corner with
Ohno on Arashi ni Shiyagare on 21 May 2011 (Aniki guest is the guitarist Hotei).
He is an illustrator who had created CD jackets for Asian Kung-Fu Generation the covers for novels like '謎解きはディナーの後で - Nazotoki wa dinner no ato de - Solve the riddle after dinner'.
This time Ohno's task is to collaborate on creating a masterpiece with Nakamura. They started in February 2011, revealed to other members in May. This art piece deserves its own thread. ^^
Screencap courtesy of chashaopao. Thank you. ^^Bigger size:
Please click to enlarge.

Direct to full-sized image:
http://imageshack.us/f/857/onyusuke1.jpg/
Edit:
I wrote these after re-watching the show in HQ. Long read ahead. ^^;;
I just love the details on the piece. Nakamura drew Ohno (without the shadow) and asked Ohno to draw the other members. After Ohno had done that, the drawing went back to Nakamura for colouring and adding more details, like the horse and the 5-coloured rainbow, I think. My Japanese ain't that great yet to understand everything they said. ^^;;
The illustrator must have done a lot of research on Arashi. He's the one who filled in the colours for the painting. He got their member colours right. Sho's tie in the shade of red, Jun's hair is purple, Ohno's vest in blue, Aiba with green and Nino with the yellow sky backdrop.
Anyway, here's what I see and how I interpret them. This time I'm going to describe in order. Starting from Nino's corner going clockwise.
- Nino in GANTZ suit, playing a portable game console. Cards spouting off Mt. Fuji with yellow sky backdrop. The only card facing up, the ace, has the Arashi kanji making up the spade. Three roses on Nino's head. Red, blue and black.
- The rump of the horse. Half of Japan to the west (?). Saturn drawn on the brick wall. Actually there are three planets (?), including Saturn (the other two I guess as the moon [has craters] and Mercury/Earth in blue), with stars strewn over the wall. I think the brick wall and the roses are a tribute to Arashi ni Shiyagare (see Shiyagare's opening). Not sure why the universe is there... Then I noticed the UFO with the guest's face floating around the screen. Well, the individual corner is called 'Encounter with the unknown', so perhaps this...?
- Aiba as 'Tori ningen - Birdman'. Cause of his connection with animals - and maybe to that one time back in D no Arashi days when he tried to fly off a ledge using 'man-powered airplane'. Ohno chose the crane for Aiba. Googled what the crane signified in Japan, and found out that the Japanese refer to the crane as the 'bird of happiness'. Which fits in with Aiba who can always make people cheerful and happy. More cranes flying with him. The green sky is either dotted with snow or stars. I'm more inclined to say snow though.
Birdman Aiiba also carries a bouquet of roses.
- Ohno in the centre drawn by Nakamura with his artiste cap flying off (the red cap under the aeroplane). A fishing rod in his right hand, while his left hand clutched on a microphone with a paintbrush on the bottom bit. Ohno added the upper part of his shadow, I think. At first I thought it was a werewolf (cause earlier Nakamura had drawn a solo portrait of Ohno with a wolf in the background), then I realised that it was Ohno's shadow with merging with the shadow of the fishing rod's reel thingy. ^^;; Oh, Ohno also has a red rose.
More roses on the bottom filling in the space.
- Jun's huge face blends in the background. The New York skyline and the fishing rod lined his profile. Ohno loves New York. Ohno's interests are spilling over to Jun. (Jun loves New York too) His sunglasses reflected stars and streamers and stuff. Definitely showing Jun as a visionary for the concerts and stuff. The red rose was added by Nakamura.
- Then comes Sho in his caster suit. Yellow rose in his pocket and red/pink tie. He has a pointer hovering over a yellow heart and pointing up to the other half of Japan. He's standing on a rock pedestal of some sort surrounded by marine life. The fish looks like it's gonna smooch Sho.

There's a piano keyboard and basketball. Sho plays piano, but the basketball...
If we connect Aiba to Sho, the map would become whole, which could cause the basketball seem to roll over to Sho's side. I would've expected a football with Sho, not basketball. Basketball is Aiba's thing - the reason he first entered Johnny's.
- The horse is galloping at full speed ahead. I wonder if it symbolises Arashi as a group? Nakamura added the horse if I'm not mistaken. A horse well-suited for entertainment with its hat and mask thingy. ^^ I totally would've missed the Arashi logo on the horse (in magenta), had they not highlighted it in the clip.
- Not sure what the heck is going on on the top left. Looks like some fishnet-stockinged legs. Tribute to the Moulin Rouge burlesque theme for Shiyagare? There are also what appear to be parts of cards/dress or something. Sparkles in the in the dark background.
- And finally at the top of the masterpiece, the Arashi jet flying in front of the rainbow with five Arashi colours. ^^
So much details... Wish Ohno had explained more during the show. ^^;;
Anyway, what else do you guys see and interpret? ^^