DVD box set includes three-night TV specials "So Long!" each starring AKB48 team A, team K, and team B members. The first drama starring team A is a story about love and friendship. Centers on a socially awkward high school girl (Mayu Watanabe) who is into ballet and her coach (Shinoda Mariko) who has a sad past. The second one starring team K is a story about two sisters who have opposite personalities. Yuko Oshima and Jurina Matsui play the roles. The last one starring team B is a story about a teacher and her students. Haruna Kojima plays the teacher who will leave a job before graduation of her students. Haruka Shimazaki plays one of her students who realize the reason why her teacher leaves. This edition comes with a bonus disc with making-of, PR spots, and more, a 48-page special booklet, four posters, and a replica of the script randomly selected from three stories.