Sakura manga was a type of Japanese animation that would usually be adjusted according to the audience's progress. If the audience chose a specific episode number or timeline, the animation would start from a fixed place. This setting was called "episode number lock" or "timeline lock" to ensure that the audience could enjoy the complete storyline. In Sakura manga, the audience could choose different episodes or timeline, but the beginning and end of each episode were fixed. This kind of flexible plot setting also provided the audience with more choices and freedom, allowing them to better integrate into the story.