The Dual Yumi (逆和弓 Gyaku Wakyū, lit. Reverse Wakyū) is a Yumi that is introduced in Fire Emblem Fates. Like its Japanese name suggests, the Dual Yumi is imbued with the unique property of reversing the Weapon Triangle, alongside doubling its advantages and disadvantages.
Reverses the weapon triangle and doubles weapon triangle effects.
Yumi is the kun'yomi reading for the Chinese character gōng (弓), which in Japanese on'yomi is pronounced as kyū. Wakyu (和弓) translates to "Japanese Bow", the kanji which is pronounced wa in on'yomi and kazu in kun'yomi is borrowed from the Chinese hé (和), which means "harmonious" or "harmony".
Traditionally, while most Western bows fire arrows from the middle of the staff, Yumi fire their arrows from above the middle. The Dual Yumi fire from under the middle, likely highlighting its "inverted" nature.