"The Garden of Youth" is a visual light novel focused on youthful romance. The story mainly revolves around a group of boys and girls suffering from a mental illness known as "AS" who are caught up in a "Box Garden" experiment. Each of them has their own desires, unknown pasts, and hopes of "saving everything." Their choices will determine their own future and that of others, whether they willingly sacrifice themselves for the experiment or escape from it all. The youth and love stories in the "Box Garden" will unfold here.