SMH.
None of you seem to know how singles for AKB48 work in Japan.
So the girl group has over 100+ members and they have thus 100+ different single covers for every single. Fans will buy the single with their favourite members as the single covers repeatedly to help them win a competition among the group members. The members with the highest single sold will be selected to perform in renowned theaters.
Let's use Fifth Harmony as an example. If 5H is like AKB48, "Worth It" will be released with 5 different single covers. Fans will buy the single to support their favourite members in the group. The top 3 members of the group get the chance to perform on GMA and even VMAs.