I am curious about knowing how old Sanemi has.
There is uncertainty regarding Sanemi's age.
There are claims that Sanemi could be in his early 30s.
It can be inferred from the story that Sanemi is likely around 20s.
There is a lack of consensus among sources regarding Sanemi's age.
While we may not know his exact age, Sanemi has proven himself to be a formidable force.
Sanemi's age doesn't hinder his unwavering determination to protect others.
To wrap it up, regardless of Sanemi's age, his remarkable talents, unwavering dedication, and strong commitment are evident and inspiring.

Demon Slayer Character Guide Ages Heights and Birthdays CBR