Correspondent Stefan Sjöberg has very kindly made me aware of an interesting Ki-100 WIP build report in 1/72nd scale using the original Fine Molds kit (the one which included Hasegawa Ki-61-I tei parts and white metal parts) by Swedish modeller Magnus Fridsell here. Kawasaki Ki-61/Ki-100 series fighters seem popular right now and from the work done so far I'm looking forward to seeing how this one progresses.
The original Fine Molds "composite" Ki-100 kits were issued by Hasegawa with Fine Molds logo circa 1989 (together with Ki-61-II kits) but were superceded by all new mould kits issued by Fine Molds in 1999 (Ki-100 "fastback") and 2001 (Ki-100 "bubbletop") and which are still available. The "bubbletop" version shown below was the rarer of the two "composite" kits. The fastback version came with markings for a 111th Sentai, 1st Daitai option (as shown on the box art) attributed in some sources as the aircraft of Major Toyoki Eto the Daitai commander although there is some doubt about that. Two other options were a 59th Sentai, 2nd Chutai aircraft # 177 and a 244th Sentai example # 32.
Image credit:- Fine Molds Box heading image © 2014 Magnus Fridsell; Fine Molds "bubbletop" box image from eBay (seller vfa127)