Aoshima 1/72 Ki-100 Otsu

KIT #: 008126
PRICE: 1800 yen
DECALS: Four options


Once the Ki-100 had proved a success, Kawasaki got to work on plans to continue production once it ran out of Ki-61-II airframes to convert. Since the new airframe would be built as a Ki-100 from the start, improvements were incorporated, resulting in the Ki-100 Otsu (or Ki-100-Ib).  It differed visibly from its predecessor in having an all-round vision canopy, as intended for the Ki-61-III. Since production of this type began in May 1945, only 118 were delivered.


Aoshima has produced this second version of the Ki-100 by replacing the fuselage halves and partly replacing the transparent parts. Except for the rear canopy, the two sets of clear parts are identical, so one mold is used for both, with gates to the two different rear canopies. These two trees of parts come in one bag, and a second bag holds the rest of the parts common to both kits. To see the other sprues, visit the previous preview. Ed The two versions of the aircraft have identical dimensions, so based in part on my preview of Aoshima’s Ki-100 Kō, I’d say this kit also has the wingspan exactly right with an accurate planform, and the assembled length may be short by as much as 1/16”. The outline of the fuselage and tail also look exactly right compared to photos and drawings. Like the other kit, it’s molded in light grey styrene with the high quality of molding you expect from Japanese kits, with good detail but control surfaces molded in-place. Transparent parts are nice and clear, with options for open or closed canopy. One common feature I didn’t remark on in the earlier preview is the opening behind the cowl flaps, which provides a view of the separately molded exhaust stubs. I plan on thinning the trailing edge of those flaps, but the parts breakdown in this area will make for a sharper-looking model.

Instructions are mainly in Japanese with clear assembly diagrams and the usual paint color table with numbers for GSI Creos paints (Mr. Color and Aqueous Hobby Color). Decals are provided for four aircraft of the 5th Sentai, with only one diagram in the instructions for placement and no explanation of what markings go with what pilots or units, unless I’m missing it because it’s in Japanese. White rings around fuselage hinomaru are separate white discs on the decal sheet, leaving it to the modeler to achieve perfect registration. Printing is nice and sharp and both the red (A/N16) and deep yellow (A/N20) look right to me.

The box art is a bit crude, like that on similar kits when I was a youngster. Okay, I’m not expecting Shigeo Koike’s fabulous artwork on every aircraft kit coming out of Japan, but I should note the upper color appears to be IJN dark green (N1), which could be a pitfall for modelers unable to decipher the painting instructions. The Ki-100 would have been finished with upper surfaces in Kawasaki’s version of IJA olive-green (A3). The painting instructions in both of Aoshima’s new Ki-100 kits call for Mr Color #130 Dark Green (Kawasaki), a semi-gloss dark olive green. However, neither kit’s painting instructions give any color for the under surfaces or any demarcation line. In a few cases of Japanese aircraft were finished in the upper color overall, but according to the photos and eyewitness testimony I have found, all Ki-100s were finished with a light grey underside, which would have been some version of A/N2, and a very low and straight demarcation line. Bare metal is also possible for the underside, but I haven’t found evidence of it. 


For those building a collection of WW2 Japanese warbirds, Aoshima has provided a bubbletop Ki-100 to be a stablemate to the razorback, by all appearances providing very accurate kits of both production versions. For modelers of more obscure subjects, it remains to be seen if Aoshima produces the Ki-100-II under development at war’s end. By buying directly from Japan, I got this kit two months before its US release and even saved a little money.


Francillon, René J. Japanese Aircraft of the Pacific War, 2nd edition, Naval Institute Press, 1979.

Ed Bailey

January 2014

Thanks to my wallet for this kit and to AmiAmi for discounting the price.

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