Unassailable: Anything within his awareness can be cut
Long Range: He can cut remotely from dimensions away
Instant Death: Merely letting him know you can kill you
Memetic Sword: His sword's his awareness molded sharply
Immense Power: None can resist/null his cutting power
The sword is a tool for killing, yes
Yet killing is also a tool, whether it's for greed, survival, protection, love, family, etc.
To merely say the sword is a tool for killing is missing the bigger picture
To kill for the sake of killing...such Sword Arts would only kill its user
自分 sought the survival for both him & his family, so his blade was honed w/ intense precision & awareness that cuts