The hardest part of the genre. The protagonist tries to save a loved one (a parent who died in a car accident, a friend who committed suicide). But because they have changed history, the saved person no longer recognizes the trauma. The protagonist suffers alone, carrying two timelines' worth of grief.
On forums like 2chan , Reddit (r/LightNovels), or MyAnimeList , "Gaki ni modotte yarinaoshi" is used in three ways: gaki ni modotte yarinaoshi%21