Watch Online Free on Watchseries. "AKB48 Tandoku Concert ~Jabajatte Nani?~" (AKB48単独コンサート〜ジャーバージャって何？〜) is AKB48's spring concert. The concert was held at Saitama Super Arena on April 1, 2018. It was the first concert with the new Teams since the AKB48 12th Anniversary Shuffle.