Ryouchimo, also known as Ryo-timo, helmed an animation project that serves as a complementary piece to Aimer's album "Walpurgis". The said project featured several released videos, namely: "Night 1: The 22 O'clock Guide" on April 16, 2021, "Night 2: The 26 O'clock Search" on June 4, 2021, and "Night 3: The 4 O'clock Letter" on September 12, 2021.