The upper half of the Terrene's handle is orange, as is the spike in its pommel, while the rest of it is black. The blade is roughly diamond-shaped and has three small diamonds and one long one set in it. All four of these diamonds are silver and the edges of the blade are indigo-colored. The counterweight—also indigo—is pentagonal in shape and has three small gaps in it.
"Terrene" means "terrestrial" or "of the earth". Utsusemi no (うつせみの?) is a five-syllable makurakotoba, a type of poetic epithet used in waka poetry. It refers to a husk or cast-off shell (such as a cicada's), as well as the material things in life.
The Terrene's ground combo starts with a slow, one-handed upward slash, followed by an identical, but much quicker upward slash, and ends with another powerful, one-handed upward slash.
The aerial combo consists of a single one-handed sideways slash.