Also known as: オボレル, ゼロカラオボレルイセカイセイカツ, Re:_Drowning_Life_in_Another_World_from_Zero
A Re:Zero Kara Hajimeru Isekai Seikatsu side story published on April Fools of 2018, commonly known as Oboreru or Wrath IF.
This time, the point of divergence happens in Arc 2, more specifically, after Rem (Re:Zero)'s death. Instead of committing suicide by jumping off of the cliff, Natsuki Subaru accepts Beatrice (Re:Zero)'s help and proceeds to be teleported away.