Using Quickdraw on the Kunai can cause infinite reloading issues. (Fixed?)
As with all thrown sidearms, when performing a Jump Kick, your warframe will hold the Kunai as dual pistols. Upon hitting the ground and sliding, this will quickly switch back to as it should be. (Fixed?)
When a Hobbled Dragon Key is equipped, sprinting (depending on your frame's speed) will cause the Kunai to be held incorrectly. This also applies to sliding (at slow speeds?). (Fixed?)
The Kunai (苦無) were traditionally a multipurpose tool, similar in design to a crowbar or trowel. It could be used for gardening, masonry, and other things. Popular culture has since associated the kunai with ninjas, primarily due to the arsenal of ninjas being adapted farming tools.
The Despair and Hikou share similarities to the Kunai, they are all thrown secondaries that deal mostly Puncture damage.