Ushijima Iiniku (loosely translated, “Good Meat”) is a rather well known ero-cosplayer who specialises in putting together some rather titillating costumes and then putting them on display using her pretty good body to full effect. Needless to say, the sexy costumes from SOS Galactic Patrol from the PS2 game Suzumiya Haruhi no Tomadoi were putting out a rather loud call for her!
Not a 100% sure actually in tracing the SOS Galactic Patrol appearance of the Haruhi Suzumiya franchise, with it either first appearing in the 2008 Suzumiya Haruhi no Tomadoi (The Perplexity of Haruhi Suzumiya) PS2 adventure game from Banpresto or from the second Haruhi Theatre side story from the original creator. All I do know is this is an alternative universe take that thrusts the characters into a galactic police force scenario and puts them in some pretty skimpy uniforms, designed by none other than Noizi Ito, the animator on the first light novel.
As for quiet Yuki Nagato, well she is a bibliophile humanoid interface, created by Data Integration Thought Entity and is tasked with monitoring Haruhi as well as investigated the unexplained “explosion of data” that occurred three years before she was placed.
And now you know.