Detail from the cover illustration of the recent Genshiken Nidaime Blu Ray release, showing the current Genshiken cast cosplaying Kujibiki Unbalance. Kuji-Un operates within Genshiken as Genji Monogatari or Heike Monogatari do within Japanese lit, or the Silmarillion within the Lord of the Rings, as a source of archetypes, a borrowed backstory to lend the characters an extra dimension (not 2D to 3D, but 2D to 2D+). Cosplay as a device for introducing archetypes into what is essentially a slice-of-life manga is pretty ingenius and might only really work in this manga. And it's the reason Ohno can never be allowed to graduate.
Ogiue and Sue have appeared before as Renko and The President, and Ohno as Kasumi Kisaragi. Madarame makes sense as Chihiro Enomoto. Typically Hato has now appeared as two different characters.
"As different as you can imagine. The air in Tokyo never feels soft against your skin. And those dry winds. The other day I was in the city shopping and a gust of wind blew the packages right out of my hands. They rolled and rolled, and there I was chasing them and at the same time trying to hold down my skirts. People are right about those dry winds."
Junichiro Tanizaki, The Makioka Sisters, page 129.
A shikishi is a squarish board of stiff white paper typically used as a vehicle for ink painting and calligraphy. A work of art created on shikishi can also be called shikishi, the same way an oil painting gets called a canvas. The shikishi format has been in use since the 12th century and is still going strong. Owing to its handiness for both drawing and writing with ink, shikishi is popular at meet-the-mangaka events today. The shikishi below was given to voice actress Uesaka Sumire by Kio Shimoku in honour of her work as the voice of Rika Yoshitaki in the Genshiken Nidaime anime. Sources: Top. Bottom. See also.
Screen caps from Genshiken Second Season, episode 9. I've decluttered the top image a bit. Episode 9 is the best installment to date, with a raft of characters, heaps of plot and a lot of good comic reactions.
Chapter 87 of Genshiken includes this panel of Sue greeting Angela at the airport. Is this not the best use of speed lines? You can follow the precise action as Sue mimes raising a shotgun, lowering it slightly and moving it from side to side, all in one motion. [Sorry, it's a missile launcher.]