This is a very cool katana, but it is a rare katana that requires you to defeat about 30 elite Pirates of the Third Sea to get it. You can use Haki with the J key. You can return to normal mode by pressing the space key. 日本語↓ ~日本語~（翻訳） ３０体のエリート海賊を倒すことで手に入れられるとてもかっこいいカタナです！！ Jキーを押すことで覇気を使えます スペースキーを押すことでノーマルモードに戻せます
Aura Effect reference :by windows98_ Yama (Aura :by me Yama (item) :by me Yama :by me Drip fruits :by youtube
