Digimon Fusion - 2013 Dorulumon's True Colors 1-9 was released on:
USA: 10 November 2013
Digimon Fusion - 2013 was released on: USA: 2013
Digimon Fusion - 2013 Trouble in Paradise - 1.15 was released on: USA: 22 December 2013
Digimon Fusion - 2013 Clash in the Clouds 1-17 was released on: USA: 17 February 2014
Digimon Fusion - 2013 Crisis or Conquest 1-6 was released on: USA: 23 October 2013
Digimon Fusion - 2013 Danger Erupts 1-7 was released on: USA: 3 November 2013
Digimon Fusion - 2013 The Rival Champions 1-10 was released on: USA: 17 November 2013
Digimon Fusion - 2013 A Rival Appears 1-3 was released on: USA: 21 September 2013
Digimon Fusion - 2013 Trouble in Paradise 1-15 was released on: USA: 22 December 2013
Digimon Fusion - 2013 Island Zone in Chaos 1-4 was released on: USA: 13 October 2013
Digimon Fusion - 2013 Showdown in the Sand Zone 1-14 was released on: USA: 15 December 2013
Yes, Takuya is a regular character in Digimon Frontier however he makes an appearance in Digimon Fusion but he's not a main or recurring character in Digimon Fusion, his appearance is just a cameo.
Digimon Fusion - 2013 A Dark Cloud Over the Sky Zone 1-16 was released on: USA: 17 February 2014