Q1W1 is a anti-submarine patrol bomber that entered service in January 1945. It could carry four 60kg bombs or two 250kg bombs. It has one or two fixed forward-firing 20mm Type 99 cannon as offensive armament and one rearward-firing Type 92 machine gun as defensive armament.
The speed is very slow(322 km/h), which is very suitable for BR 1.Since Germany has Potez 633(two 200kg bombs), let it carry two 250kg bombs for BR1 seems reasonable due to it’s low-speed.
Unfortunately the low engine power and weight of this plane resulted in an abysmal ~4 m/s rate of climb, which is less than half the Potez. They’d have to fudge the numbers pretty seriously to make it even flyable in BR1. I would be fine with that because it looks really cool and could be a decent BR1 option with 4x60kg bombs and the single 20mm cannon.
It has been on the WT forums for a couple years and hasn’t been added yet. Maybe when it gets added in the future they can port it to Enlisted.