: Proprietary archive formats (like .int or .pak ) containing the character sprites, background art, music, and voice acting.
: As the final episode in the tetralogy, it ties together the parallel world mysteries introduced in Episodes 1 (Miyako), 2 (Sora), and 3 (Haruka). It shifts from a standard character route into a "Grand Finale" that addresses the ultimate threat of the "Evil Eye" user and the origin of the Artifacts. 9-nine-Episode 4.rar
: This episode focuses on Noa Yuki , the protagonist Kakeru’s kouhai and a key member of the school's student council. : Proprietary archive formats (like