What old Sanemi is?
There is uncertainty regarding Sanemi's age.
Sanemi is reportedly around the age of early 30s.
Sanemi's age, based on contextual clues, is possibly in his 20s.
The information available about Sanemi's age varies, leaving room for speculation and uncertainty.
Regardless of his age, it is undeniable that Sanemi possesses great expertise and abilities.
Sanemi's age doesn't affect his unwavering dedication to his comrades and the fight against evil.
To sum up, while the precise age of Sanemi may be unknown, his talents, dedication, and unwavering commitment are undeniable.

Demon Slayer Age Height Birthdays of All Characters 2023