Ram and The Night Study Group (ラムと夜の勉強会) is a shop exclusive limited edition short story. This was later adapted and included in the Re:Zero Ootsuka Shinichirou Art Works Re:BOX.
Ram attempts to teach Subaru the alphabet of their world but it is not going all too well, Subaru complains that it's too difficult to learn something new in a short time and challenges her to do the same. He bets with her, who would be able to learn faster during that night, him the Re:Zero dialect or Ram learning Japanese writing, saying that in case he loses she can be more strict as a teacher and if she loses Ram would have to be kinder and less strict with him, a bet that she accepts with pride. At the end of the night, Subaru gives her an exam with questions that Ram easily answers after studying Japanese (much to Subaru's shock and frustration as now she will be harsher in his lessons). After leaving Subaru's room, Ram has a funny feeling that she had already seen all those writings of Japanese somewhere else with another person but dismiss it quickly and goes to bed shortly after.