What is known is that version 1.00 is explicitly labeled "Complete. Do not ask for updates." And yet, in 2018, a corrupted patch file titled "Confession_EXTRA.dat" appeared on a Japanese file host. This patch adds a single, non-interactive ending titled "The Laughing Christina," where the entire game’s script is replaced with a looping description of a hospital room. Most scholars of the visual novel medium consider this patch unofficial, but its code signature matched v1.00 perfectly.
Christina wrote the vagueness into a plain question: who was the benefactor? The answer was non-answerable: papers mislaid, accounts muddied by years, an old promise eaten by a new convenience. Christina placed her hand on Magdalena’s and promised to find the truth. The Passion of Sister Christina -v1.00- By PAON
or "Sister" themed psychological dramas. What is known is that version 1