BKA48

BKA48 performing Flying Get at AKB48 Group Rinji Soukai "Shirokuro tsukeyou janai ka!"

BKA48 was a special AKB48 unit created from the Mecha mecha iketeru! AKB48 Kimatsu Test. The members are known as BKA48 (BAKA48 - Idiot in Japanese), and were selected from the show as the 7 members who scored the lowest on their tests. They're also known as the BAKA 7.

They're also a single unit, and sing the song Haste to Waste, a coupling song from AKB48's 31st single Sayonara Crawl. Kawaei Rina is the center, as she scored the lowest on her test.

Kawaei also performs in a harness with HASTE & WASTE (ハステとワステ).