Based on the specific phrase "the key to a broken heart" in relation to Tifa Lockhart and Final Fantasy VII , there is no official game content or mainstream media titled as such. However, the query appears to refer to a specific fan-created adult video (hentai) or a fan-translation project. Search and Context Analysis
While anime brings the visuals, manga is the source code. Here are three manga that are arguably better than their anime adaptations or have no anime yet. Based on the specific phrase "the key to
Sci-Fi, Horror, Romance, Comedy This is the current "hype machine" of Shonen Jump. It combines aliens, ghosts, high school romance, and absurdist humor. A boy believes in aliens, a girl believes in ghosts. They bet on which is real, only to find out both are real. It is insane, hilarious, and the action panels are brilliantly dynamic. The anime is coming soon, but read the manga first. Here are three manga that are arguably better
Set in a world where negative human emotions manifest as "Curses," Yuji Itadori joins a secret organization of Sorcerers to eliminate a powerful Curse named Ryomen Sukuna. The animation by MAPPA is industry-leading. A boy believes in aliens, a girl believes in ghosts
If you tell me (motivation, relationships, handling failure, loneliness, creativity, discipline), I can give you a shorter, more targeted list.