In early 2014, Harada expressed interest in continuing the series on PlayStation 4. Tekken 7 was released in Japanese and Korean arcades in 2015. It is the first game in the series to be powered by the Unreal Engine. The game received an update, subtitled Fated Retribution and released to arcades on July 5, 2016, and featured the series' second, third, and fourth guest characters, the second guest character to appear are Akuma from the Street Fighter franchise by Capcom, Geese Howard from SNK's fighting game franchises, and Noctis Lucis Caelum from the Final Fantasy franchise by Square Enix. The PlayStation 4 version was confirmed at Paris Games Week 2015, and features exclusive content as well as virtual reality support. The Xbox One and Microsoft Windows versions were released on June 2, 2017 alongside the PlayStation 4 version, and are based on the Fated Retribution. In the canonical ending, considered the conclusion of the Mishima saga, Heihachi takes control of the Zaibatsu, and attempts to expose Kazuya of the Devil Gene. In the end, in their final battle, Kazuya kills Heihachi and throws him into an erupting volcano, whereas Jin, who recovered from his coma, declares that he must kill Kazuya to end the cursed Mishima bloodline. It was also revealed that Heihachi killed his wife Kazumibecause of her possession of the Devil Gene and the fact that she had gained a split personality because of it, shortly after Kazuya was born.