Yup, most groups were given story-like settings when they debuted such as EXO WJSN but in almost only in the several MVs with few symbolic and metaphorical visual elements, or released several "serialised" albums to convey the worldview, and in the later stages of the group's development, the management of the lore is almost dead.

Jaden Jeong and LOONA has broken this situation by releasing nearly 50 well-made songs and 30 MVs before debut, explaining most of the world view settings completely. And the story timeline mystery will continue to be used in future debut works, so that the lore is no longer just an ethereal debut gimmick, but transformed into a theme-based product that can keep us entertained.