The protag will be playing a game with the club after school, and the background will shift from the school at day time, to the afterschool sunset).

Game miscellaneously shifts between day, afternoon, and sunset indoors for no apparent reason (I.E. PS2 sprites and backgrounds patch for Higurashi PC v1.1 : PS2 sprites and backgrounds patch for Higurashi PC v1.1b :

PS2 backgrounds-only patch for MG Higurashi Kai Meakashi-hen v1 : PS2 sprites-only patch for MG Higurashi Kai Meakashi-hen : PS2 sprites and background patch for MG Higurashi Kai Meakashi-hen v1 : Link to a prepared data02000.arc is here: ) arc in your Higurashi folder, and you're good to go. For this patch to work, you need to download bgitools (in System Tools), and use arcextract.exe to extract data02000.arc to a folder, extract the patch files into this folder, then use arccreate.exe to put together data02000.arc again. (As is, this patch doesn't work, and I'm assuming the sprites-and-background patch for Tsumihoroboshi is the same way. PS2 backgrounds-only patch for MG Higurashi Kai Tsumihoroboshi-hen v3 :

PS2 sprites-only patch for MG Higurashi Kai Tsumihoroboshi-hen : PS2 sprites and background patch for MG Higurashi Kai Tsumihoroboshi-hen v1.1b : PS2 sprites-only patch for MG Higurashi Kai Minagoroshi-Hen v1.0 PS2 sprites and background patch for MG Higurashi Kai Minagoroshi-Hen v1.0 PS2 sprites and background patch for MG Higurashi Kai Matsuribayashi-Hen V2 PS2 sprites and background patch for MG Higurashi Kai Matsuribayashi-Hen V3

PS2 sprites-only patch for MG Higurashi Kai Matsuribayashi-hen :

Higurashi kai download