When characters are in unison mode.
Applies to the [[Lyrical Nanoha]] series, starting from [[Mahou Shoujo Lyrical Nanoha A's|A's]].

Known so far are:

* [[Reinforce]]/[[Yagami Hayate]]
* [[Reinforce Zwei]]/[[Yagami Hayate]]
* [[Reinforce Zwei]]/[[Vita (nanoha)|]]
* [[Reinforce Zwei]]/[[Signum]]
* [[agito_(nanoha)|Agito]]/[[Zest Grangeitz]]
* [[agito_(nanoha)|Agito]]/[[Signum]]

h4. See also

* [[fusion]]
* [[gattai]]