The last two Disgaea games have their pages named Disgaea Dimension 2 and Disgaea 5. Those titles date back to when the subtitles for these games were unknown. These pages, along with all associated subpages, should thus be renamed to include said subtitles, just like the first four games. They would therefore become "Disgaea D2: A Brighter Darkness" and "Disgaea 5: Alliance of Vengeance", with "Disgaea Dimension 2" and "Disgaea 5" acting as aleternative titles instead.
The last two Disgaea games have their pages named Disgaea Dimension 2 and Disgaea 5. Those titles date back to when the subtitles for these games were unknown. These pages, along with all associated subpages, should thus be renamed to include said subtitles, just like the first four games. They would therefore become "Disgaea D2: A Brighter Darkness" and "Disgaea 5: Alliance of Vengeance", with "Disgaea Dimension 2" and "Disgaea 5" acting as aleternative titles instead.