This volume contains 10 stories: 1. Smothered in Sisterly Love (The love of the older sister fullness) 2. Under One Roof (In the one roof bottom) 3. Dance on the Palm 4. Thump! If Big Sis is There, I Want to Enter (It wants to come in if there is an older sister) 5. Elder Sister's Infatuation Ceremony (Type-A senior older sister "MOE") 6. Begging Teacher (Tease! Teacher) 7. A Secret Recipe 8. Anerugii (Anergy) 9. Breasts are the Basis of Sex (Bust is the reason of a success) 10. Extra Chapter: Big Sister of Summer