Escaping Shinra, the party discovers Cloud at an island hospital in a catatonic state from Mako poisoning; Tifa stays as his caretaker. When the island is attacked by a planetary defense force called Weapon, the two fall into the Lifestream, where Tifa helps Cloud reconstruct his memories: a shy child during his time in Nibelheim, Cloud was blamed when a young Tifa injured herself trying to cross Mt. Nibel. Resolving to become stronger, Cloud leaves for Midgar to join SOLDIER but was never accepted into the organization; the SOLDIER in his memories was his friend Zack. At Nibelheim, Cloud surprised and wounded Sephiroth after the latter's mental breakdown, but Jenova preserved Sephiroth's life. Hojo experimented on Cloud and Zack for four years, injecting them with Jenova's cells and Mako; they escaped, but Zack was eventually killed. The combined trauma of these events triggered an identity crisis in Cloud; he constructed a false persona around Zack's stories and his own fantasies. Cloud accepts his past and reunites with the party, who learn that Aerith's prayer to the Planet had been successful: the Planet had attempted to summon Holy to prevent Meteor's impact, but Sephiroth blocked Holy. Shinra fails to destroy Meteor but manages to defeat a Weapon and puncture the Northern Crater, costing the lives of Rufus and other personnel. After killing Hojo, who is revealed to be Sephiroth's biological father, the party descends to the Planet's core through the opening in the Northern Crater and defeats both Jenova and Sephiroth. The party escapes and Holy is summoned, which destroys Meteor with the help of the Lifestream. Five hundred years later, Red XIII is seen with two cubs looking out over the ruins of Midgar, which are now covered in greenery, showing the planet has healed. Initial concept talks for "Final Fantasy VII" began in 1994 at "Final Fantasy" developer Square, following the completion of "Final Fantasy VI". As with the previous installment, series creator Hironobu Sakaguchi reduced his role to producer and granted others a more active role in development: these included Yoshinori Kitase, one of the directors of "Final Fantasy VI". The next installment was planned as a 2D game for Nintendo's Super Nintendo Entertainment System (Super NES). After creating an early 2D prototype of it, the team postponed development to help finish "Chrono Trigger". Once "Chrono Trigger" was completed, the team resumed discussions for "Final Fantasy VII" in 1995.