とともに

「とともに」 1. Indicates that the state of the first clause changes, and the state of the second clause changes accordingly. The change of these two states is in the same direction.
2. Indicates that the actions of the first and second clauses occur simultaneously. The two clauses are equal in status and not necessarily causally related.
3. Expresses the meaning of "along with" or "together with". Although similar to 一緒に and と,「とともに」is slightly different in that it implies "mutual support" rather than simply accompanying. The kanji for「とともに」is 「と共に」.