: Hayashi Risa, Si Woo, Kang Soo-cheol, Bum-suk, Min-ji, and Oh Joo-ha
: This indicates the video encoding format used. x264 refers to the H.264/AVC (Advanced Video Coding) standard, which is widely used for encoding high-definition video. It's known for delivering high video quality at lower file sizes. Japanese Mom 2 2017 WebRip 720p AAC x264-KOREANZ
: This likely refers to the group or individual that ripped and possibly distributed the video. In online communities and forums where video rips are shared, groups often brand their releases with their name or acronym. : Hayashi Risa, Si Woo, Kang Soo-cheol, Bum-suk,