Night Unison (Japanese: 強化拡張パック ナイトユニゾンStrength Expansion Pack Night Unison) is the name given to the thirteenth Japanese subset released during the Sun & Moon Era of the Pokémon Trading Card Game and the first to be considered as an enhancement of the ninth main expansion, Tag Bolt, featuring the collection symbol "SM9a". The subset adds more of the newly introduced Tag TeamPokémon-GX to the TCG and has references to the Kanto region.
The Strength Expansion Pack Night Unison is a subset containing 70 cards that was released on January 11, 2019 in Japan. The subset has particular focus on Darkness and Fairy-type Pokémon, with cards such as Greninja & Zoroark-GX and Gardevoir & Sylveon-GX, providing support for Pokémon and Energy manipulation.
The Night Unison set is released in Japanese and Korean, only available in unlimited edition. Since the Sun & Moon era, Japanese 1st edition cards are no longer printed. Cards in the Korean set were also available as Reverse Holos.