How old is Ichigo in Bleach: Thousand Year Blood War?

How old is Ichigo Kurosaki in the Bleach: Thousand Year Blood War anime and how old are the rest of the series’ main characters?

How old is Ichigo in Bleach: Thousand Year Blood War?

Ichigo Kurosaki, Character Profile Wikia

VIZ Delivers 'Bleach: Thousand-Year Blood War' Final Arc to Hulu, Disney+

Potential theory(might be entirely wrong): ichigo's appearance in the one shot is his true shinigami form and his appearance in the thousand year blood war arc was made by the zero division.

Was Ichigo and Aizen weaker during The Thousand-Year Blood War than during their final battle in Bleach? - Quora

Bleach: TYBW hypes cour 2 with the new Ichigo key visual

Ichigo Kurosaki Bleach Thousand-Year Blood War Q Posket Prize Figure

Ichigo Goes To Soul King Palace To Unlock True Form - Bleach: Thousand Year Blood War

Ichigo Kurosaki, Character Profile Wikia

Bleach Creator Tite Kubo Promises New Information on May 28