Say... isn't that a Leica M3? Man, Aya got some cash.

I assure Aya manage to get it from Rinnosuke for a good(cheap) price.

Ah yes, I believe it was somewhere in Forbidden Scrollery where we found that sakuya can move faster than the speed of light. (makes sense since she can stop time and yet still be able to move around, thus moving faster than light.)

Also, ZA WARUDO

jimreynold2nd said:

Say... isn't that a Leica M3? Man, Aya got some cash.

M3 has a bar on the rangefinder window with bolt near the frameline ilumination window. It's the biggest visual cue. Also the M3's self shutter knob is on the right side.
Couldn't be M1 or M2 or M4, because those two has another lever on the right side of the lens unlock button.
Couldn't be M5, that thing has flat top and larger shutter speed dial and generally look different.
Couldn't be M6, M7 or MP because those has battery cover on the front.

Two feature that would put it as the M8, M9 or M10 (yeah, I prefer calling it that) is if Sakuya's fingers are covering the film rewind lever and switch or not.

http://i.imgur.com/ZpqM4HW.gif (via Petapixel)

So, ignoring some characteristics such as groove under the top plate's right side, and the bolt over the lens mount, I'm guessing it's either tha M4-P or the digitals.

CMIIW

Aya said:
Yup, just press till it blacks out for an instant and you hear a click.

I give up. It's an SLR.