post #46669 The 'wave motion cannon' is the weapon of Space Battleship Yamato, an old anime. So kohaku is being like, super otaku and just generally wonderfully crazy.
In case anyone else has trouble finding this, the correct search words are z-less and 脚長お姉ちゃん.
Akiha-sama! The wave motion cannon! The wave motion cannon* has been fired all over the place--!!!
*: 波動砲 from Uchū Senkan YamatoAh!?...I didn't get changed, is it?Aaah!?These are...I never thought that you were deceiving me with that "change your clothes" talk... however... that's all it was...He... he did pretty well...Oh myIt's not like...This woman! She aimed at the gap left by the lowered guard with a middle kick, and stroke with a left straight for a direct KO!St... striped panties!!?No way! Are you saying the stockings were just a feint to draw attention to the legs!?Waha!♥Kohaku...san...stop...touching...It seems that you're jumping to conclusions...