The specific code 010012A017F18000 is the Title ID typically used to identify the Japanese or global digital version of the game in database lists. Developer: Type-Moon .
It is part of the larger Nasuverse , sharing the same world as Tsukihime and Fate/stay night . Witch on the Holy Night [010012A017F18000][v0][...
A film adaptation by studio ufotable is currently in development, with a targeted premiere in 2026 . Witch on the Holy Night - Steam The specific code 010012A017F18000 is the Title ID
Originally a 2012 PC exclusive in Japan, it received a remaster for Nintendo Switch and PlayStation 4 in 2022, which included the first official English translation. Witch on the Holy Night [010012A017F18000][v0][...
It looks like you're referencing the for the visual novel Witch on the Holy Night (also known as Mahoutsukai no Yoru or Mahoyo ).