What is ichigo true shikai?

Ichigo's true Shikai is called Tensa Zangetsu, which is the evolved form of Ichigo's original Shikai, Zangetsu. Tensa Zangetsu takes the form of a black blade with a silver edge and a long chain at the end resembling a wakizashi.

Its abilities include incredible speed and agility, allowing Ichigo to move faster than the eye can follow. It also has the ability to extend the chain on its hilt, enabling him to attack opponents from a distance.

One of Tensa Zangetsu's most notable abilities is its ability to transform into a hybrid form, which merges Ichigo's Bankai with his true Zanpakutō spirit. This grants him immense strength and speed and allows him to unleash his most powerful attacks, such as the Getsuga Tenshō: Mugetsu.

Overall, Tensa Zangetsu is one of the most powerful Zanpakutō in Bleach and one of the defining traits of Ichigo as a character.