Young Brunette Girl With A Japanese Katana Sword Reveals In The Traditional Washitsu Room With Tatami Flooring

The katana is characterized by its distinctive appearance: a curved, slender, single edged blade, circular or squared guard, and long grip to accommodate two hands. It has historically been associated with the samurai of feudal Japan, and has become renowned for its sharpness and cutting ability.
Etymology
"Katana" is the term now used to describe nihontō that are 2 shaku (606 mm / 23.9 in.) and longer, also known as "dai" or "daito" among Western sword enthusiasts although daito is actually a generic name for any long sword.