All the types include the title song, the second track "Darashinai Aishikata" by Under Girls and the third track, which is different from each type.

The 3rd track of Each Type

Type A: "Tomadotte Tameratte" (Next Girls)
Type B: "Jibun Tachi no Koi ni Kagitte" (Future Girls)
Type C: "Tsuki no Kamen" (Upcoming Girls)
Type D: "Private Summer" (SHOWROOM)
Type E: "Give Up wa Shinai" (Tofu Pro Wrestling)

*Limited editions feature different cover artworks from the regular ones' and come with an event ticket (valid only in Japan).

AKB48 Complete Listings