Kouta Hasegawa is a completely normal high school student who likes his Pompompurin stuffed animal, a Sanrio character modelled after a Golden Retriever, which his grandmother gave him when he was young. However, an incident in which other kids accused him of being girly for liking Sanrio characters made him ashamed of his attachment to Pompompurin. Through a series of unexpected events, Kouta ends up meeting others at school who also like Sanrio characters—Yuu Mizuno, a flashy boy who is popular with girls; Shunsuke Yoshino, a member of the soccer team; Ryou Nishimiya, an underclassman who is a library assistant; and Seiichirou Minamoto, the student council president. Through his new friends, Kouta learns that there is no need to be embarrassed for liking Sanrio characters; and together, they aim to create a play for the cultural festival in order to transform his normal school life into a sparkly one. [Written by MAL Rewrite]

This episode contains three stories. The first story, "Toki no Asase" (Shoals of Time), will center on Nero and Vanno persuading Frate to skip mass with them and see the circus. The second story, "Subete no Kinou" (Yesterday Before Everything), will focus on Ganzo, as he meets a young man named Vincente at a bar, and asks Ganzo to do something for him. The third story, "Ashita, Mata Ashita" (Tomorrow, and then Tomorrow), is set after Nero and Avilio defeat Mad Mack and are on the way back to Lawless. Nero suffers from fever dreams, and Avilio nurses him back to health. (Source: ANN)

Merc Storia takes places in a world where humans and monsters coexist. The protagonist, Yuu, is a healer apprentice and possesses the ability to tame monsters. In a quest to regain the memories of Merc, a girl confined in a bottle, the pair embarks on a journey. (Source: MAL News)