Episodes 5-11 are referred to as C³-bu: The Line. Someone clearly saw the similarities and made a video crossing over footage from C³ and audio from SO:TL, with Yura as Walker, Choujirou as Konrad and the rest of C³ as the squadmates.
Yura when she's just having fun and nothing else: "Fun Mode".
Yura's bad rep during the aforementioned C³-bu: The Line earns her the nick "Yura Walker".
When Yachiyo puts on her hood, she's the Little Red Sniping Hood.