There are a couple items in the game that increase the damage of elemental ninjutsu.
  • Koga Hatsuburi/Koga Hatsuburi +1
  • Iga Tekko +1/Iga Tekko +2
  • Yagentoshiro

Text on Koga Hatsuburi/Koga Hatsuburi +1:
"Enhances ninjutsu damage"

Text on Yagentoshiro:
"Enhances ninjutsu damage"

Text on Iga Tekko +1/Iga Tekko +2:
"Increases elemental ninjutsu damage"

For the sake of keeping equipment descriptions uniform to prevent confusion, the text "Increases elemental ninjutsu damage" on the Iga Tekko +1/Iga Tekko +2 should be changed to "Enhances ninjutsu damage" or the descriptions on the Koga Hatsuburi/Koga Hatsuburi +1 and Yagentoshiro should be changed to match that on the Iga Tekko +1/Iga Tekko +2.

Thank you.