第 4 集: 莉可與雷古開始深入深淵，並遇見了一張意想不到的熟悉面孔。
2017年7月28日 播出
Riko and Regu start their adventure into the Abyss, while there they run into an unexpected familiar face. (Source: Amazon)
Riko and Regu start their adventure into the Abyss, while there they run into an unexpected familiar face. (Source: Amazon)