Project SEKAI×Aku no Taizai Series is a collaboration between Project SEKAI and mothy's Aku no Taizai Series (sometimes referred to as the Nanatsu no Taizai Series or Seven Deadly Sins Series). The collaboration features VIRTUAL SINGERs as the characters depicted in the series. These characters can be acquired through the Memoirs of Sins Gacha. The collaboration also adds 3 songs: Aku no Musume, Aku no Meshitsukai, and Saribitotachi no Waltz.
Login campaign
Players who login between December 13, 2021 15:00 JST and December 27, 2021 14:59 JST will receive 2☆ Miku and brioche.