Part Efficient Aircrafts!

Now here's a plane you don't see every day. Allow me to introduce the Ki-61 "Hien!"

It literally can't land, unless you're fine with getting a new propeller, but in the air the Hien is a force to be reckoned with. Featuring powerful guns and being one of the most agile PEAs I've ever made, the Ki-61 should always be seen as a threat.
Unless you're flying like an F4U, then you can probably cut yourself a bit of slack.

Take for example this P-40E, which really stood no chance against the Ki-61 aside from the former's armor.

PEA Lore:

The Ki-61 was always a unique one. Considered the smartest of the Japanese PEAs (he literally invented the jet engine, but gave Germany the blueprints and credit, PEAverse is weird, deal with it). However, he's also considered one of the biggest troublemakers. For example, he actually chose to use the gray paint, not to save resources but because he though the shine would annoy other planes. Secondly, he doesn't actually use normal Ki-61 guns, he stole them from a P-51C. Third, he may or may have not accidentally caused Operation Ten-Go, which in the PEAverse didn't sink the Yamato, but still left it crippled beyond use. There's more, but I'm pretty sure half of the things he's done would put him on 24 different hit-lists if I tell y'all.

However, he's not entirely insufferable. When he's not causing more chaos than the A-20 himself, he's actually a pretty cool guy. Ki-61's best friend is the Bf-109, who he considers to be his cousin. The Bf-109 honestly doesn't get it but rolls along with it anyways.

He's okay with the A6M and J2M(s) but he thinks they're archaic for using radial engines. Unfortunately that makes his life difficult because literally every other plane in Japan during WWII used radial engines. He's alright with P-40 and P-51 (ignore the P-40E shot down earlier that was just to flex the Ki-61's power), but Ki-61's actual rivals, for some reason, is Britain. Not even Russia, Italy, or France, who have (surprisingly) actually done something to him. He doesn't like the British. The reason? He claims that his tea is better than the Spitfire's tea.