Mira and Ao are forced to take make-up exams, so they hold a study session together at Mira's house where Suzu and Misa join them. After the two manage to pass their exams, they work their first part-time job at Suzuya's Bakery. With their newfound earnings in hand, the two head out on a station-front date, but then they discover Suzu walking along with Ino-sempai. Surprised at the unusual pairing, the two secretly follow after them...
You can be my little sister 
starting today if you want!
!يمكنك أن تكوني أختي الصغرى ابتداءً من اليوم إن شئت
Ab heute darfst du liebend gern
meine kleine Schwester sein!
Puedes ser mi hermanita si quieres.
Puedes ser mi hermanita si quieres.
Si tu veux, à partir d’aujourd’hui,
je peux être la tienne.
Você pode ser minha irmã mais
nova a partir de hoje, se quiser!
С этого дня можешь быть
 моей младшей сестрёнкой!