Umm.. Vincent can be found inside the Nibelheim Mansion and Yuffie appears in a random battle in any forest I think..
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Adopted FF Character | FF Pet | Anime Character | Game Character: Aerith | Gold Chocobo | Skuld | Xiao Qiao
Weapon: The First Tsurugi
Member of the Death Flash Clan
Straight on this long, continuing road.. There is surely something to believe in..