Adult PC Game: Over Write Ver.1.0 by Macaroni Eraser Archive

The protagonist, Thief-kun, is betrayed and killed by the beautiful but ill-natured female knight, 'Rina.' However, he can actually rewind time as many times as he wants through save and load mechanics. He tries to rewind several times to avoid being killed, but he always ends up dying. As he continues to load his save, he notices a strange save file...?​