Krusty,
It sounds like you are describing thje Ki-46, not the Ki-45. The Ki-45 was designed as a fighter from the start. The Ki-46 was a recon aircraft that latter was pressed into service as a fighter.
Odee,
There was no greater danger of fire from the wooden construction. I have a photo of a Mossie that was covered in burning fuel from the Me410 that it shot down. The Mossie returned home with some damage. It was not kindling.