X265-ion265: Our Beloved Summer S01 Korean Webrip

Next, the term "WEBRip" refers to a digital video file that has been ripped from a streaming service. This is often done without authorization, which can be a copyright issue. x265 is a video compression standard, more efficient than x264, so using x265 allows for smaller file sizes without much loss in quality. The -ION265 part is the group's name, indicating who processed and released this rip.