Emilia's Starry Sky Classroom (エミリアの星空教室) is a shop exclusive limited edition short story.
Emilia, Puck, Beatrice and Subaru are sitting outside in the garden. It is the fourth day of Subaru's arrival. The conversation switches from something to stars, and Emilia tells Beatrice of the name of the star from a old story which she called "Petelgeuse", however Subaru corrects her and tell her that it is actually called "Betelgeuse". Sometime later, Emilia starts talking about the story of the milky way to Puck, but the story is strange and Puck doesn't give a interested reaction.