IJAAF & IJNAF wrecked aircraft #42 - Mukden, Manchuria

A most interesting and rare video today from Getty, here,
According to the caption:

"Wrecked Japanese warplanes in Mukden, Manchuria, after World War II

Pan across wrecked and abandoned Japanese warplanes / group of men walking along road in front of wrecked and abandoned planes / close view of wrecked plane / four shots of wrecked planes / US serviceman walking past wrecked planes / same man getting up on plane and looking into cockpit / Note: exact day not known"

A number of IJAAF aircraft types can be seen in the video but the majority is Manpi Ki-79, single and two-seaters, and Tachikawa Ki-55 trainers.

Also, here's an extra photo, again from Getty, of a Kokusai Ki-86 (a Japanese copy of the Bücker Bü 131 "Jungmann") belonging to the Mukden branch of the Koku Shikan Gakko (Army Air Academy) and a Ki-55 trainer in the background.

Honza78 left a comment and asked: 

Question, can you decipher the inscription on the Ki-86 rudder?

Since you asked, I located two more photos of the same aircraft.

One from here:

and the other from here:

Only a part of the aircraft name is visible "げつこ" which doesn't mean anything in Japanese without at least one more hiragana. It could be "げっこう" (moonlight) like the well-known IJNAF night fighter type.

In the second photo the full inscription should be visible but, unfortunately, the photo is not clear enough to see anything.